diff --git a/lib/doodstream-upload.js b/lib/doodstream-upload.js
index 525fa5d..b672405 100644
--- a/lib/doodstream-upload.js
+++ b/lib/doodstream-upload.js
@@ -10,7 +10,7 @@ const UPLOAD_TIMEOUT = 1800000; // 30 min
 function _debugLog(msg) {
   try {
     const ts = new Date().toISOString();
-    fs.appendFileSync(path.join(process.cwd(), 'doodstream-debug.log'), `[${ts}] ${msg}\n`);
+    fs.appendFileSync(path.join(__dirname, '..', 'doodstream-debug.log'), `[${ts}] ${msg}\n`);
   } catch {}
 }
 
diff --git a/lib/hosters.js b/lib/hosters.js
index 1475818..4ddd685 100644
--- a/lib/hosters.js
+++ b/lib/hosters.js
@@ -254,6 +254,7 @@ function createUploadBody(filePath, formFields, onProgress, throttle, signal) {
     yield preambleBuf;
     const fileStream = fs.createReadStream(filePath, { highWaterMark: CHUNK_SIZE });
     for await (const chunk of fileStream) {
+      if (signal && signal.aborted) throw new Error('Aborted');
       if (throttle) await throttle.consume(chunk.length, signal);
       bytesRead += chunk.length;
       yield chunk;
diff --git a/lib/throttle.js b/lib/throttle.js
index c7bc2ac..abb1ad0 100644
--- a/lib/throttle.js
+++ b/lib/throttle.js
@@ -21,6 +21,7 @@ class Throttle {
         bytes -= available;
       }
       if (bytes > 0) {
+        if (signal && signal.aborted) return;
         // Wait 50ms for tokens to refill
         await new Promise((r) => setTimeout(r, 50));
       }
diff --git a/lib/updater.js b/lib/updater.js
index 40e47d6..a9fc8b6 100644
--- a/lib/updater.js
+++ b/lib/updater.js
@@ -56,7 +56,8 @@ function findLatestYml(assets) {
 async function fetchJson(url, signal) {
   const controller = new AbortController();
   const timeout = setTimeout(() => controller.abort(), CHECK_TIMEOUT);
-  if (signal) signal.addEventListener('abort', () => controller.abort());
+  const onAbort = () => controller.abort();
+  if (signal) signal.addEventListener('abort', onAbort);
 
   try {
     const res = await fetch(url, {
@@ -67,6 +68,7 @@ async function fetchJson(url, signal) {
     return await res.json();
   } finally {
     clearTimeout(timeout);
+    if (signal) signal.removeEventListener('abort', onAbort);
   }
 }
 
diff --git a/lib/upload-manager.js b/lib/upload-manager.js
index 34db135..0f16879 100644
--- a/lib/upload-manager.js
+++ b/lib/upload-manager.js
@@ -48,13 +48,20 @@ class UploadManager extends EventEmitter {
       sem.updateLimit(settings.parallelCount);
     }
     // Update global throttle if speed limit changed
-    if (this.globalThrottle) {
-      const newKbs = (this.globalSettings.globalMaxSpeedKbs || 0);
-      if (newKbs > 0) {
+    const newKbs = (this.globalSettings.globalMaxSpeedKbs || 0);
+    if (newKbs > 0) {
+      if (this.globalThrottle) {
         this.globalThrottle.updateRate(newKbs * 1024);
       } else {
-        this.globalThrottle = null;
+        this.globalThrottle = new Throttle(newKbs * 1024);
       }
+    } else {
+      this.globalThrottle = null;
+    }
+    // Update global semaphore live
+    const globalLimit = this._getGlobalParallelLimit();
+    if (globalLimit > 0 && this.globalSemaphore) {
+      this.globalSemaphore.updateLimit(globalLimit);
     }
   }
 
@@ -262,7 +269,7 @@ class UploadManager extends EventEmitter {
             attempt,
             maxAttempts
           });
-          await this._sleep(2500, signal);
+          await this._sleep(3000, signal);
         }
 
         const jobStart = Date.now();
diff --git a/main.js b/main.js
index 64eff0b..7daf8ec 100644
--- a/main.js
+++ b/main.js
@@ -577,6 +577,7 @@ ipcMain.handle('start-upload', (_event, payload) => {
   // This ensures webContents.send() calls from upload events
   // are not interleaved with the handle() response.
   process.nextTick(() => {
+    if (!uploadManager) { debugLog('nextTick: uploadManager was nulled before startBatch'); return; }
     debugLog('nextTick: calling startBatch now');
     uploadManager.startBatch(tasks).catch((err) => {
       debugLog(`startBatch REJECTED: ${err && err.stack ? err.stack : err}`);
diff --git a/renderer/app.js b/renderer/app.js
index a78028c..8019037 100644
--- a/renderer/app.js
+++ b/renderer/app.js
@@ -691,6 +691,7 @@ function sortQueueJobs(jobs) {
     else if (key === 'host') cmp = a.hoster.localeCompare(b.hoster);
     else if (key === 'status') cmp = getStatusOrder(a.status) - getStatusOrder(b.status);
     else if (key === 'speed') cmp = (a.speedKbs || 0) - (b.speedKbs || 0);
+    else if (key === 'progress') cmp = (a.progress || 0) - (b.progress || 0);
     return cmp * factor;
   });
 }
@@ -1951,12 +1952,11 @@ async function loadHistory() {
     for (const file of (batch.files || [])) {
       for (const result of (file.results || [])) {
         if (result.status === 'aborted' || result.status === 'error') continue;
-        const isError = result.status === 'error';
         historyRowsData.push({
           date: dt.text, dateTs: dt.ts,
           filename: file.name || '', host: result.hoster || '',
-          link: isError ? `[Fehler] ${result.error || ''}` : (result.download_url || result.embed_url || ''),
-          isError, order: order++
+          link: result.download_url || result.embed_url || '',
+          isError: false, order: order++
         });
       }
     }
diff --git a/renderer/index.html b/renderer/index.html
index 1c59ee8..fef09db 100644
--- a/renderer/index.html
+++ b/renderer/index.html
@@ -84,7 +84,7 @@
                 <th class="col-elapsed">Zeit</th>
                 <th class="col-remaining">Rest</th>
                 <th class="col-speed sortable" data-sort="speed">Speed</th>
-                <th class="col-progress">Fortschritt</th>
+                <th class="col-progress sortable" data-sort="progress">Fortschritt</th>
               </tr>
             </thead>
             <tbody id="queueBody"></tbody>