So not sure what the latest update of NIS 2010 is... but I updated it on May 29th and got a whole bunch of problems.
My specs:
Windows 7
Corei7 950 @ 3ghz
1st Problem:
After applying the update and restarting, the NIS would hang.
Initially this did not block anything as I could still open Firefox and IE to log onto Symantec's Website for a quick look on the forums. I then re-installed NIS and this seemed to fix the issue.
2nd problem:
A few hours later, (After i had turned off the PC), I turned on the PC again to do some web surfing. Firefox and IE would not start. I tried to restart the PC again from this point to see if it was just a fluke. To my surprise, the PC hung while logging into Windows - I get a black screen with the mouse pointer movable, but nothing else - pure black screen.
So at this point I have NIS Uinstalled - what do I do now?