Does your PC often crash with a bluescreen saying something like ati2dvag "infinite loop"....?

This is a typical driver problem with your ATI graphics card.

It happened for my Dell Gx270 PC with ATI Radeon HD3650 graphics card during browsing.
this happened for the following drivers:
ati_radeon_catalyst_10.11 (10-11_xp32_dd_ccc_enu.exe)
ati_radeon_catalyst_11.1_noAPP (11-1_xp32_dd_ccc_enu.exe)
ati_radeon_AGP_11.2_patch (11-2_agp-hotfix_xp32_dd_ccc.exe)

the following fixes it:
 add/remove programs
 ATI install manager
 express uninstall all ATI software
 also uninstall "install manager"
 (at this point you can disable antivirus if needed)
 install ati_radeon_9.12_driver_only (9-12_xp32_dd.exe)

 this driver can be downloaded from:
 Catalyst 9.12 driver only