I myself am not experiencing this issue, but I know why it is happening.
You can do these things to most likely help:
1) Uninstall the ZoneAlarm service. I think on the new version it is called "ZoneAlarm Privacy Service" or something very similar, then reboot.
The key will be at HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\servic es
You can use Regedit to do this or if you're not comfortable with that, use the trial version of Dameware NT Utilities to delete the service instead.
(I always rid this anyhow and that's probably why I don't have the issue.)
2) Install the latest beta version of Firefox. It is currently 23 beta 3: