I downloaded this Mozilla Firefox web browser, it is blocking every thing and getting many errors. I am trying to delete it using Add or Remove program , now it is stick and can not remove.  Any suggestion???????????

What Exactly is it blocking? Is it being Blocked By web reputation if u go to the URL'S ? Which OS r u running? Win7 has some Stability problem with FF 3.5(The latest release)..Please Clarify what exactly is happening

You can install Window Clean up and remove all the components of Mozilla Firefox. 

download Window Clean up frm here
http://support.microsoft.com/kb/290301

Another location if previous does not work
http://www.softpedia.com/get/Security/Secure-cleaning/Windows-Installer-CleanUp-Utility.shtml

why to do soo long process just boot your OS  in safe mode and install Firefox again and Re uninstall it !! thats it !!

...

G.Keto; I have similar situation too.
Thank you, I thought about that but which key has to hit , is it F8 or F7?
I cleaned my XP home and reloaded it. I have McAfee anti virus system with maximum protection, is that protecting me.

i pefer AVG 8.5 , uses less memory and quick protection, which you can download full version from rapidshare , macafee ya ! that is also good anti-virus software , i used to use that before but now i love AVG 8.5 . 

To boot your OS in safe mode,  At the time your PC is booting ( After you turn on your pc ), Keep hitting DEL and then you will see a  Boot manager window and  press F8 and choose option safe mode thats it !

Looks like you downloaded Mozilzz firefox
instead of Mozilla firefox, thats why you have problems. :D

Long live FF.