QUOTE(Ai_Tak @ Jan 22 2007, 05:14 AM)

Ad-Aware SE personal has no realtime monitoring features and it totally inactive when not running, therefore any incompatibility is completely artificial in nature and is caused by the program complaining. It is possible for a program to be incompatible with plus or pro since they have real time monitoring.
When an anti-virus program sees ad-aware (or some minor fragment of it), and refuses to install without valid reason (intentional incompatibility), chances are they trying to push out ad-aware as a competitor.
Such action by an anti-virus company does not make that company look good at all.
This must be the real crux of the matter - realtime monitoring.
After being forced 15 months ago by abominable programming on the part of Teles (SkyDsl) to completely wipe my PC and start all over again, the first thing I installed after XP Pro was BitDefender v9. Hence I had no problems installing Ad-Aware Personal. The problem started about 2 to 3 months ago after upgrading to v10. Deep scanning with Ad-Aware runs through the first 250,000 to 400,000 files and then freezes.
Last night I closed down every application apart from BitDefender v10, deactivated all energy saving options in Control Panel (I originally thought it had something to do with the monitor and HDs running down after 20 mins) and ran Ad-Aware Personal with the latest signatures. I left it running and went to watch a couple of Season 4 episodes of ER!!

On returning, it had frozen at 397,xxx files and wouldn't budge. All I could do was Cancel and ignore the fact it had found 1 critical object. It was too late to start all over again - bed was beckoning.
I'll try again this evening after finishing work - this time with everything including BitDefender v10 closed - and report back.
The reviewer CalamityJane quoted is totally right: BitDefender shouldn't stop you from using other AV and anti ad/-spyware programs. As Ai_Tak rightly says, it is an excellent program (although try saving the firewall rules), but no AV software is capable of catching everything - and there's always a possibility of having configured one setting wrongly and letting something through. There are certain situations in which I wonder whether I've caught something despite having BitDefender running and I'd like to install and run Kaspersky to double-check. But obviously this isn't possible. Bombarding BitDefender with mails signed "A.N. Noyed" could possibly get them to reconsider.
Mark