Firefox updated itself to version 1.5.0.5 on my work laptop yesterday at which point it would no longer connect to the web. It was only after half an hour of playing with the Check Point Integrity Flex desktop firewall today (which claimed that Firefox was allowed to connect to the internet) that I finally checked the “Changes Frequently” option, at which point Firefox sprang back in to life. Phew – just a few hours of being forced to use IE was more than enough!