I have had Win 7 64bit installed on my C: Partition which contains System Files and Program Files. Data is stored on Partition E:. The System has functioned perfectly untill straight after installing updates on 16/02/2012.I believe some of these updates were: KB2660465, KB2645640, KB2654428 and an Office 2007 Update.The Update Install procedure called for a System Restart which for unknown reasons booted to Safe Mode. I performed a Restart which booted correctly and I continued to work for the rest of the day. Next morning it booted to ChkDsk running, which apparently found and rewrote Orphaned Files. This activity caused me serious concern. I ran scans with MSE and MalwareBytes and both were clean.I decided to perform a System Restore back to 12/02/2012 which was a known good Restore Point, created by Critical Update. This Restore has now been running for four hours with the HDD Light blinking. This makes me believe that there is in fact something happening on the HDD, what I do not know.I am aware the System Restore must not be stopped once started.The Question now is: How much longer should I allow it to run?? or Should I kill it now???If I were to Kill It now, what would I then have to do???I have never known System Restore to take so long before. I see this as being abnormal.Can someone please help me with this as I do not want to destroy two months of installation work.