Will NIS 2011 18.5 be pulled from Auto-update?



NIS 2011 v18.5 was locking up my PC, so I’ve gone back to 18.1.  Is it still possible that I could get 18.5 thru auto-update?  I don’t like having to turn off auto-update, but is there a way to ensure I don’t get 18.5 with auto-update on?