I'm having a **** problem (or I think it's a problem) with my Windows XP SP3... I start to use Firefox, browse and blah blah blah... and then sometime after it, my pc gets reaaaaaly slow... and the problem is not firefox... when I see the process running in my pc, i see that the svchost.exe is using almost 100% of my cpu! and even after I close firefox, it continues using 100% of the cpu... and i have to kill the process and run firefox again... Why the hell this is happenning?? Will formatting my pc help to solve the problem??