This is really a followup from my "how long do I wait" thread but I've isolated a problem so will start anew. Turns out the Windows updates that were failing to install, finally installed properly after I uninstalled Firefox. (My tech support guy gave up and told me to call Microsoft. Well that'll be a cold day...) The reason I uninstalled Firefox was that it seemed more laggy and slow than everything else, so I decided to remove it completely. Sure enough, the Windows updates all installed successfully. So, I downloaded Firefox afresh, installed it and opened it, and it caused Windows to lock up. Chrome would not open, nothing would. I could not perform CTL-ALT-DLT and so could not terminate Firefox. Couldn't shut down properly so powered it off and rebooted in Safe Mode. There I uninstalled Firefox again. Rebooted and now all works great. Keep trying or give up and use Chrome which I hate?