I recently discovered- that my autocomplete:clear pages or passwords\when trying to clear gives an unresponsive program? All the cookie and history deletes work! What might the cause be?
check your computer for spyware.
go to www.lavasoftusa.com and download ad-aware.
install it and run it and it cleans ur computer from trojans and spyware.
enable ur firewall
keep ur antivirus upto date.
keep ur system upto date with windows update.