My Firefox crashes when I uploading files to RapidShare?

I want to upload my files to RapidShare using Firefox but when I tried to upload a file the Firefox crash can anyone help me?

Well that's a little bizarre. Here's a few things to try:
Make sure your Firefox is updated to the most recent version.
Try it in another browser (Internet Explorer, Google Chrome, Opera, etc...), and if it crashes in one of those too, then it's probably your computer, not Firefox.
If it doesn't crash in one of those other browsers, then try uninstalling and reinstalling Firefox.
Are you trying to upload directly to the site? Or are you using some sort of Rapidshare toolbar?

Hello you have infected with down-up.gen .Au....worms that crashes your files friend ..............So Do try first know what infection you have.......I know no anti virus can disinfect it....Only needed malware-bytes to disinfect that.....or spy were software.............

you can download it from....

http://download.cnet.com/Spyware-Doctor-2010/3000-8022_4-10293212.html

http://download.cnet.com/Malwarebytes-Anti-Malware/3000-8022_4-10804572.html

Do try these..................