40% of Internet users do not upgrade their browsers to the most secure
version. Internet Explorer users have the worst record, with
more than half having failed to update.
OK, people, do your patriotic duty and get with the upgrades!
Then we can see the National Threat Advisory go down to blue,
for the first time in history.
Ah, but sometimes the most secure version of a browser is not compatible with other software running on the same machine. For example, a routine security upgrade to IE7 in the spring of 2007 shut down my version of ArcGIS. This problem might be fixed by now, but I resolved it by uninstalling IE7 (at least to the extent that one can) and only using Firefox. This is the sort of thing that makes people wary of accepting upgrades. (Though my version of Firefox is up-to-date.)