Firefox Crash

I was unable to work properly cause my FF portable crash. I run FF in private mode browsing by default.

I have 4 tabs on the boot (gmail, meebo, linkedin, cajamadrid all with https) and Im behind a Corporate proxy. When I try to open a new tab, maybe two, FF suddendly crash. Then, the crash report "crash" too when I try to send it. (Seems that the Gmail and Meebo tabs have problems to load properly too).

Maybe its a problem with the plugins (have a lot). I remember that one of this gave me a problem when firefox tried to load the tabs. Specifically was Noscript with an error telling something with "chrome"!!!

How can i get help with this problem?

Plugins: Noscript, ADP, HTTPS Everywhere, GoogleSharing, Wisestamp, Greasemonkey, Xmarks, Echofon, Lazarus (disabled in private browsing mode), Screengrab, HttpFox (i dont use it), Siphon, DownthemAll, Save as PDF, Adobe DLM (disabled), Blacksheep, Downloadhelper, Element properties, FirefoxSync (without account), FlashGot, Google Gears, Java quick Starter 1.0, Microsfot .NET framework, Minimize to Tray Plus, Netcraft Anti-Phishing Toolbar, qualsys browser check, Tabble, User Agent switcher) Thank you