I'm 99% sure BitDefender 9 Standard's "Scan accessed files" option is the reason that my PC is bogged down at Windows XP Pro startup. When this was enabled this morning, my PC was bogged down for 7 min 20 sec (7:20) after the Windows desktop appeared. I disabled "Scan accessed files" and rebooted and the PC ran apps quickly at 0:32. I re-enabled "Scan accessed files," rebooted, and the PC was bogged down for 7:15. For the 7 times I booted yesterday with "Scan accessed files" disabled, the PC ran apps quickly after elapsed times that ranged from 0:31 to 0:41. For the 4 times I booted yesterday with "Scan accessed files" enabled, apps would not run for anywhere from 1:22 to 3:05 after the desktop appeared.
(1) Would an upgrade to DB 10 solve this problem?
(2) How risky is it to run with "Scan accessed files" disabled?
(3) I also run Spy Sweeper which is busy checking stuff at startup. If others do not find that BD9 slows their PCs, I wonder if the combination of Spy Sweeper and BitDefender be causing the extreme delay.
I've been using BD9 for over 6 months this problem did not start until about 4 weeks ago. I have autoupdates turned off for both BD and Spy Sweeper.
Once past startup, BD9 causes some delays, but its performance during normal PC operation is tolerable -- I'm NOT commenting about how long it takes to do a full scan of all files on my drives.
(I originally posted a question about this at http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Windows/XP/Q_22441239.html
and then later isolated the problem to BitDefender )