Hi XP sp3 4gb ram Firefox 6.0.2 Firefox crashes every time I do any of the following. Then I have to force quit Fire fox. If i click a download link on a web page, Firefox freezes the instant I click the link ...but Firefox does not freeze if I click a web link on a web page or page navigation link. If i go to the Menu bar > Tools > Options, Firefox freezes the instant I select Options from the Tools menu. ...but Firefox does not freeze if select any other item from the Tools menu. If I go to the Menu bar > File, Firefox instantly freezes the instant I select either "Save Page as..." or "Open file..." ...but Firefox does not freeze if I select any other option from the File menu such as: New Tab, New Window, Send Link, page Setup, Print, Exit etc If I go the Menu Bar > Bookmarks > Show all Bookmarks > Import and Backup, Firefox instantly freezes the second I select "Import" or "Export" ... but Firefox does not freeze if I select any other command in the Bookmarks sub menus, nor does it freeze if I back out of the menu entirely. Same as above for History if I select "Import" or "Export" ...so I have isolated the problem to a limited number of commands in Firefox that cause Firefox to freeze... described above. Everything else in Firefox works fine. HERE IS A SUMMARY OF WHAT CAUSES THE FREEZING: • Clicking a download link on a webpage • Going to the Menu Bar > File and selecting "save as" or "Open File" • Going to the Menu bar > Tools and selecting Options. • Going to Bookmarks > Show all Bookmarks > Import and Backup and selecting either "Import" or "Export" • Same as above for History if I select "Import" or "Export" Everything else in Firefox works fine. I went through every menu command and checked for freezes. Only the commands I mentioned above cause the freezing. I tried the following to try to fix it: • Reset my modem and router (Problem still exists) • Uninstalled FF. Deleted folders, profiles (Downloads.sqlite), Registry entries. Reinstalled. (Problem still exists) • Restarted FF in Firefox safe mode. (Problem still exists) • Restarted in Windows Safe mode and then started FF in Firefox safe mode (Problem still exists) • Disabled Window firewall. Disabled ZoneAlarm firewall, Shutdown ZoneAlarm firewall. Set Internel Options to default settings. (Problem still exists) • I reset the config option: browser.download.manager.scanWhenDone to false What does work? • Firefox does not crash when I click a link an go a website, navigate a page, use a menu item command. • Firefox works fine on my other computer. • Internet Explorer works fine on the computer that Firefox is having a problem on. • My other applications work fine on the computer that Firefox is having a problem on. I want to add that, I just overcame the XP Recovery Virus by following a post that suggested running the following software to fix the virus. Everything seems back to normal except Firefox. The software I ran to fix the problem are listed below: • malwarebytes • superantispyware • ccleaner • combofix. • smart defrag • then load a good anti-virus. (I ran Zone Alarm virus scan)