| Versions | Hits | Percent | ||
|---|---|---|---|---|
| Windows | 31829703 | 78.7 % | ||
 | Windows XP | 11347069 | 28 % |  |
 | Windows Vista | 232 | 0 % | |
 | Windows (unknown version) | 13398 | 0 % | |
 | Windows NT | 6756 | 0 % | |
 | Windows ME | 1299 | 0 % | |
 | Windows Vista (LongHorn) | 5471209 | 13.5 % | |
 | Windows Mobile | 371 | 0 % | |
 | Windows 98 | 43550 | 0.1 % | |
 | Windows 95 | 69 | 0 % | |
 | Windows 2008 | 14728558 | 36.4 % | |
 | Windows 2003 | 112627 | 0.2 % | |
 | Windows 2000 | 104497 | 0.2 % | |
 | Windows 3.xx | 68 | 0 % | |
| BSD | 11512 | 0 % | ||
 | OpenBSD | 707 | 0 % | |
 | NetBSD | 85 | 0 % | |
 | FreeBSD | 10720 | 0 % | |
| Linux | 4012368 | 9.9 % | ||
 | Ubuntu | 1203275 | 2.9 % | |
 | Suse | 62002 | 0.1 % | |
 | Red Hat | 19591 | 0 % | |
 | Mandriva (or Mandrake) | 27630 | 0 % | |
 | Gentoo | 7705 | 0 % | |
 | Fedora | 67617 | 0.1 % | |
 | Debian | 48518 | 0.1 % | |
 | Centos | 21089 | 0 % | |
 | GNU Linux (Unknown or unspecified distribution) | 2554941 | 6.3 % | |
| Macintosh | 4322166 | 10.6 % | ||
 | Mac OS X | 4322093 | 10.6 % | |
 | Mac OS | 73 | 0 % | |
| Others | 245070 | 0.6 % | ||
 | Unknown | 234040 | 0.5 % | |
 | Sun Solaris | 7982 | 0 % | |
 | Symbian OS | 1571 | 0 % | |
 | Unknown Unix system | 679 | 0 % | |
 | OS/2 | 507 | 0 % | |
 | Nintendo Wii | 248 | 0 % | |
 | CPM | 41 | 0 % | |
 | Sony PlayStation Portable | 2 | 0 % | |