diff --git a/crates/librqbit/examples/ubuntu.rs b/crates/librqbit/examples/ubuntu.rs
index 7c136de..f93d27c 100644
--- a/crates/librqbit/examples/ubuntu.rs
+++ b/crates/librqbit/examples/ubuntu.rs
@@ -36,12 +36,8 @@ async fn main() -> Result<(), anyhow::Error> {
         .add_torrent(
             AddTorrent::from_url(MAGNET_LINK),
             Some(AddTorrentOptions {
-                // Set this to true to allow writing on top of existing files.
-                // If the file is partially downloaded, librqbit will only download the
-                // missing pieces.
-                //
-                // Otherwise it will throw an error that the file exists.
-                overwrite: false,
+                // Allow writing on top of existing files.
+                overwrite: true,
                 ..Default::default()
             }),
         )
diff --git a/crates/librqbit/src/http_api.rs b/crates/librqbit/src/http_api.rs
index c44e68d..0eb8f5b 100644
--- a/crates/librqbit/src/http_api.rs
+++ b/crates/librqbit/src/http_api.rs
@@ -38,7 +38,11 @@ impl HttpApi {
         }
     }
 
-    pub async fn make_http_api_and_run(self, addr: SocketAddr) -> anyhow::Result<()> {
+    pub async fn make_http_api_and_run(
+        self,
+        addr: SocketAddr,
+        read_only: bool,
+    ) -> anyhow::Result<()> {
         let state = self.inner;
 
         async fn api_root() -> impl IntoResponse {
@@ -160,22 +164,26 @@ impl HttpApi {
             state.api_set_rust_log(new_value).map(axum::Json)
         }
 
-        #[allow(unused_mut)]
         let mut app = Router::new()
             .route("/", get(api_root))
+            .route("/rust_log", post(set_rust_log))
             .route("/dht/stats", get(dht_stats))
             .route("/dht/table", get(dht_table))
-            .route("/torrents", get(torrents_list).post(torrents_post))
+            .route("/torrents", get(torrents_list))
             .route("/torrents/:id", get(torrent_details))
             .route("/torrents/:id/haves", get(torrent_haves))
             .route("/torrents/:id/stats", get(torrent_stats_v0))
             .route("/torrents/:id/stats/v1", get(torrent_stats_v1))
-            .route("/torrents/:id/peer_stats", get(peer_stats))
-            .route("/torrents/:id/pause", post(torrent_action_pause))
-            .route("/torrents/:id/start", post(torrent_action_start))
-            .route("/torrents/:id/forget", post(torrent_action_forget))
-            .route("/torrents/:id/delete", post(torrent_action_delete))
-            .route("/rust_log", post(set_rust_log));
+            .route("/torrents/:id/peer_stats", get(peer_stats));
+
+        if !read_only {
+            app = app
+                .route("/torrents", post(torrents_post))
+                .route("/torrents/:id/pause", post(torrent_action_pause))
+                .route("/torrents/:id/start", post(torrent_action_start))
+                .route("/torrents/:id/forget", post(torrent_action_forget))
+                .route("/torrents/:id/delete", post(torrent_action_delete));
+        }
 
         #[cfg(feature = "webui")]
         {
diff --git a/crates/librqbit/src/session.rs b/crates/librqbit/src/session.rs
index 0e3cc4e..b8531a9 100644
--- a/crates/librqbit/src/session.rs
+++ b/crates/librqbit/src/session.rs
@@ -210,6 +210,8 @@ pub struct SessionOptions {
     pub disable_dht: bool,
     pub disable_dht_persistence: bool,
     pub persistence: bool,
+    // Will default to output_folder/.rqbit-session.json
+    pub persistence_filename: Option<PathBuf>,
     pub dht_config: Option<PersistentDhtConfig>,
     pub peer_id: Option<Id20>,
     pub peer_opts: Option<PeerConnectionOptions>,
@@ -240,7 +242,9 @@ impl Session {
             Some(dht)
         };
         let peer_opts = opts.peer_opts.unwrap_or_default();
-        let session_filename = output_folder.join(".rqbit-session.json");
+        let session_filename = opts
+            .persistence_filename
+            .unwrap_or_else(|| output_folder.join(".rqbit-session.json"));
         let session = Arc::new(Self {
             persistence_filename: session_filename,
             peer_id,
diff --git a/crates/librqbit/src/torrent_state/stats.rs b/crates/librqbit/src/torrent_state/stats.rs
index 8940aa7..2d68d8d 100644
--- a/crates/librqbit/src/torrent_state/stats.rs
+++ b/crates/librqbit/src/torrent_state/stats.rs
@@ -191,7 +191,7 @@ impl Serialize for Speed {
         }
         Tmp {
             mbps: self.mbps,
-            human_readable: format!("{:?}", self.mbps),
+            human_readable: format!("{}", self),
         }
         .serialize(serializer)
     }
diff --git a/crates/librqbit/webui/src/index.tsx b/crates/librqbit/webui/src/index.tsx
index 4eed9db..bdcff52 100644
--- a/crates/librqbit/webui/src/index.tsx
+++ b/crates/librqbit/webui/src/index.tsx
@@ -1,7 +1,7 @@
 import { MouseEventHandler, StrictMode, createContext, useContext, useEffect, useRef, useState } from 'react';
 import ReactDOM from 'react-dom/client';
 import { ProgressBar, Button, Container, Row, Col, Alert, Modal, Form, Spinner, Table } from 'react-bootstrap';
-import { AddTorrentResponse, TorrentDetails, TorrentFile, TorrentId, TorrentStats, ErrorDetails, API, STATE_INITIALIZING, STATE_LIVE, STATE_PAUSED } from './api';
+import { AddTorrentResponse, TorrentDetails, TorrentFile, TorrentId, TorrentStats, ErrorDetails, API, STATE_INITIALIZING, STATE_LIVE, STATE_PAUSED, STATE_ERROR } from './api';
 
 interface Error {
     text: string,
@@ -171,13 +171,16 @@ const TorrentRow: React.FC<{
         return `${peer_stats.live} / ${peer_stats.seen}`;
     }
 
-    const formatDownloadSped = () => {
+    const formatDownloadSpeed = () => {
         if (finished) {
             return 'Completed';
         }
-        if (state == STATE_INITIALIZING) {
-            return 'Checking files';
+        switch (state) {
+            case STATE_PAUSED: return 'Paused';
+            case STATE_INITIALIZING: return 'Checking files';
+            case STATE_ERROR: return 'Error';
         }
+
         return statsResponse.live?.download_speed.human_readable ?? "N/A";
     }
 
@@ -206,14 +209,14 @@ const TorrentRow: React.FC<{
             {statsResponse ?
                 <>
                     <Column label="Size">{`${formatBytes(totalBytes)} `}</Column>
-                    <Column size={2} label={state == STATE_PAUSED ? 'Progress (PAUSED)' : 'Progress'}>
+                    <Column size={2} label={state == STATE_PAUSED ? 'Progress' : 'Progress'}>
                         <ProgressBar
                             now={progressPercentage}
                             label={progressLabel}
                             animated={isAnimated}
                             variant={progressBarVariant} />
                     </Column>
-                    <Column size={2} label="Down Speed">{formatDownloadSped()}</Column>
+                    <Column size={2} label="Down Speed">{formatDownloadSpeed()}</Column>
                     <Column label="ETA">{getCompletionETA(statsResponse)}</Column>
                     <Column size={2} label="Peers">{formatPeersString()}</Column >
                     <Column label="Actions">
@@ -393,7 +396,7 @@ const UploadButton = ({ buttonText, onClick, data, resetData, variant }) => {
                 const response = await API.uploadTorrent(data, { listOnly: true });
                 setFileList(response.details.files);
             } catch (e) {
-                setFileListError({ text: 'Error listing torrent', details: e });
+                setFileListError({ text: 'Error uploading torrent', details: e });
             } finally {
                 setLoading(false);
             }
diff --git a/crates/rqbit/src/main.rs b/crates/rqbit/src/main.rs
index dfdab9a..bf96634 100644
--- a/crates/rqbit/src/main.rs
+++ b/crates/rqbit/src/main.rs
@@ -77,6 +77,13 @@ struct Opts {
 struct ServerStartOptions {
     /// The output folder to write to. If not exists, it will be created.
     output_folder: String,
+    #[arg(
+        long = "disable-persistence",
+        help = "Disable server persistence. It will not read or write its state to disk."
+    )]
+    disable_persistence: bool,
+    #[arg(long = "persistence-filename")]
+    persistence_filename: Option<String>,
 }
 
 #[derive(Parser)]
@@ -275,11 +282,12 @@ fn main() -> anyhow::Result<()> {
 async fn async_main(opts: Opts, spawner: BlockingSpawner) -> anyhow::Result<()> {
     let logging_reload_tx = init_logging(&opts);
 
-    let sopts = SessionOptions {
+    let mut sopts = SessionOptions {
         disable_dht: opts.disable_dht,
         disable_dht_persistence: opts.disable_dht_persistence,
         dht_config: None,
-        persistence: true,
+        persistence: false,
+        persistence_filename: None,
         peer_id: None,
         peer_opts: Some(PeerConnectionOptions {
             connect_timeout: Some(opts.peer_connect_timeout),
@@ -343,6 +351,9 @@ async fn async_main(opts: Opts, spawner: BlockingSpawner) -> anyhow::Result<()>
     match &opts.subcommand {
         SubCommand::Server(server_opts) => match &server_opts.subcommand {
             ServerSubcommand::Start(start_opts) => {
+                sopts.persistence = !start_opts.disable_persistence;
+                sopts.persistence_filename =
+                    start_opts.persistence_filename.clone().map(PathBuf::from);
                 let session = Session::new_with_opts(
                     PathBuf::from(&start_opts.output_folder),
                     spawner,
@@ -358,7 +369,7 @@ async fn async_main(opts: Opts, spawner: BlockingSpawner) -> anyhow::Result<()>
                 let http_api = HttpApi::new(session, Some(logging_reload_tx));
                 let http_api_listen_addr = opts.http_api_listen_addr;
                 http_api
-                    .make_http_api_and_run(http_api_listen_addr)
+                    .make_http_api_and_run(http_api_listen_addr, false)
                     .await
                     .context("error starting HTTP API")
             }
@@ -438,7 +449,9 @@ async fn async_main(opts: Opts, spawner: BlockingSpawner) -> anyhow::Result<()>
                 spawn(
                     "http_api",
                     error_span!("http_api"),
-                    http_api.clone().make_http_api_and_run(http_api_listen_addr),
+                    http_api
+                        .clone()
+                        .make_http_api_and_run(http_api_listen_addr, true),
                 );
 
                 let mut added = false;
@@ -504,8 +517,11 @@ async fn async_main(opts: Opts, spawner: BlockingSpawner) -> anyhow::Result<()>
                     if download_opts.exit_on_finish {
                         let results = futures::future::join_all(
                             handles.iter().map(|h| h.wait_until_completed()),
-                        );
-                        results.await;
+                        )
+                        .await;
+                        if results.iter().any(|r| r.is_err()) {
+                            anyhow::bail!("some downloads failed")
+                        }
                         info!("All downloads completed, exiting");
                         Ok(())
                     } else {