Ok, this problem has been going on with a number of FF users since FF 8.0 (and possibly earlier). I have yet to see a suggested response that actually cures the problem, and the fact that the issue still persists in the current release tells me that it has not been addressed by the developer. I'm running Windows 7 and consistently, after waking up from sleep, FF is completely unresponsive. The only solution I have found that works is to terminate the program completely and restart it. Others have suggested Resetting FF, rebooting the system in Safe Mode etc - NONE of these suggestions cure the problem. I have tried disabling plugins and various other methods to know avail. After much testing, it is my belief that the issue has to do with the way FF handles running javascript and that FF is unable to recover from sleep mode and start these javascripts again - just a theory. This is a very common issue, and I can replicate it across other PCs as well as those running under XP SP3. I'm interested in hearing actual solutions to this issue from people who have experienced it and resolved it, not best guess stabs in the dark about things to try (and please, if all you have to add is "I'm having this problem too", it's really better not to respond - I already know that a lot of people are dealing with this problem, so simply adding your name to the list isn't going to help). Thanks, RadioActive1