Just for your interest (this is for September):

#1. Firefox 3 (US) on Windows XP  [580,091 hits]
#2. Firefox 3 (US) on Windows Vista  [296,869 hits]
#3. Firefox 3 (GB) on Windows XP  [204,553 hits]
#4. GoogleSex  [195,614 hits]
#5. IE7 on Windows Vista  [148,023 hits]
#6. IE7 on Windows Vista (not sure why it's dupe'd; the user-agents are slightly different)  [147,717 hits]
#7. PSP  [146,348 hits]
#8. Firefox 2 (US) on Windows XP  [120,191 hits]
#9. Firefox 3 (GB) on Windows Vista  [103,451 hits]
#10. Firefox 3(.03) (US) on Windows XP  [80,216 hits]


Most surprising is the PSP hits - I never thought about making this place PSP friendly...