Member Avatar for khaley

I've searched Mozilla's site and the web for help on this problem, but without success: although Mozilla Firefox is normally set to open with only two homepages on my computer, in the last month or so it's been opening with 8 pages that happened to represent one web session I had about a month ago; no matter how I adjust the settings in Tools > Options I can't seem to get it to go back to just opening the original two pages. Further, and more gravely, whenever I'm in FF now it freezes up after about 15 minutes--the top portion of the page disintegrates so that I can barely--if at all--read the taskbar (File, Edit, History, Bookmarks, etc.), and I can't click on links or type into bars--nothing seems active. I can't even close the session w/o doing it down in a bottom toolbar by right-clicking and selecting "Close." Then I open a new FF and the problem begins again about 15 minutes later.
I've troubleshot this only by doing a full Malware scan on my computer and getting rid of the one problem that showed up in that scan. I've also made sure I have all the recent Windows Vista updates.

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This thread describes two related symptoms: Firefox restoring a large, old session instead of the configured homepages, and the UI freezing about 15 minutes into use. reported the original problem; noted a reinstall helped for them. Below is a concise, practical checklist to find the root cause and stop the session restores and freezes without losing bookmarks or settings.

Start with a non-destructive test: run Firefox in Safe Mode (add‑ons disabled) via the menu or by launching firefox -safe-mode. If the freezes and unexpected session restores stop, an extension, theme, or hardware acceleration is the likely culprit. Re-enable add‑ons one at a time (or in halves) to isolate the offending item. Also check installed plugins (Flash/Java) and update or disable them temporarily.

To stop automatic restoration of an old session: back up your profile, then remove Firefox’s session files from the profile folder (look for sessionstore.*, sessionstore.js or sessionstore.jsonlz4). The profile lives under %APPDATA%\Mozilla\Firefox\Profiles\ on Vista/7; you can also open it from Firefox’s Troubleshooting Information / Profile Directory → Open Folder. Delete or move the sessionstore file, restart Firefox, then set your desired homepages in Options. Always make a copy of the profile before deleting files.

If freezes persist even in Safe Mode, disable hardware acceleration in Options → Advanced → General and update the graphics driver. Check Task Manager to watch firefox.exe memory and CPU—large growth points to a memory leak or problematic extension. If a clean profile solves the issue, migrate bookmarks and passwords (export/backup) rather than repeatedly reinstalling the program. These steps preserve data and make it easier to identify the real cause.

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Member Avatar for jingda

I have this problem as well, I delete fireofx and reinstall it and the problem is solve. But i prefer using chrome on windows 7.

Member Avatar for khaley

I have this problem as well, I delete fireofx and reinstall it and the problem is solve. But i prefer using chrome on windows 7.

Thanks--that definitely solved the problem!

Member Avatar for jingda

Good news for you Khaley. If you want to open a lot of tabs, i would recommend you to use Google Chrome but for faster browser use Firefox or Opera.

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