Windows 7: Nightly x64 zombified. Solution?

Anyone know what's up with Nightly x64 these days? Last 3 weeks or so, everytime 7 goes to semi-sleep [plugged in mode], when I return and login, Nightly is frozen. Sometimes it can recover but very slowly - not worth doing. Have to kill it the hard way.



I've submitted several reports to Mozilla team on the subject, but still persists after a number of updates.

if you have a clue, let me know, otherwise I'll be forced out of it.