Recently I purchased the win 8 pro upgrade which I installed over windows 7 premium. I had no problem other then my email client stopped working, "found it to be Norton internet security," and after a reinstall that was fixed. System seems stable and running fine. I have noticed that if I don't reboot for the whole day that windows takes up to 8 minutes plus to shutdown or restart. Now I'm familiar with the event logs and have used them to fix various glitches in the past. But after updating to Windows 8 the entry is confusing. instead of saying shutdown they say: " Warning 1/20/2013 8:41:00 AM Diagnostics-Performance 303 Standby Performance Monitoring." This service caused a delay during hybrid-sleep: File Name : fhsvc Friendly Name : File History Service Version : 6.2.9200.16384 (win8_rtm.120725-1247) Total Time : 120009ms Degradation Time : 119009ms Incident Time (UTC) : 2013-01-20T03:20:05.494425700Z I haven't used standby and was shutting down the pc. From looking at this forum, I know this isn't the normal data you ask for but didn't want to throw in anything too much before you responded. Thank you for any assistance you can offer