Google Forbidden

If I search google for “freeview forums”, I get a “403 Forbidden” page, with a message from google saying:

we can’t process your request right now. A computer virus or spyware application is sending us automated requests, and it appears that your computer or network has been infected.

Only on that one search, though – everything else works fine. Maybe they’re being spammed by this particular search string. Annoying…