Ptron, I read about your problems, earlier, too. Actually I posted on them, also.
I would try this:
1 - Disable your virus scanner before doing anything audio related. Same goes for anything else sitting in your systray
2 - If you are on an always on network conecction (i.e., cable modem or possibly DSL) disable your network connection before doing anything audio related. (you will need to re-enable to go on the net, even if you reboot
3- set your bit depth/sample rate in the aark manager
4- Open cakewalk (but NOT a project)
5 - to have PA9 automatically set up PA9 for your soundcard, use the Wave profiler (dunno where it is exactly in PA9, I am using Sonar 2.2XL... you probably will have to look through the help files to find out exactly where.....Thank the sweet Lord for help files)
6 - Make a new project
7 - check to make sure bit depth/sample rate match your earlier settings on the Aark manager. If they don't change them in PA9
8 - Record one track at a time, and keep piling them up, one on top of the other.
At what number of tracks does it start acting funny? (Maybe it never does if the Wave profiler did what it was supposed to)
As far as latency, even a little annoys the hell outta me, so I up just monitor the channel(s) I am recording dry, or with outboard effects patched into just the monitoring channels, so there is NO latency at all.
I feel your pain, man. I have been working with PCs for over 10 years now, and they can be a challenge. If you are SURE that you have started from a clean slate, and that any comparisons between 2 programs are equal in every possible way, except the programs, then you can fairly safely assume that the problem is with one of the programs. If that is where you end up, you may wanna cut your losses and get a different program. You have been sayin you think it is a compatibility problem with the Q10 and PA9, but I haven't seen anything anywhere else about there being one. And like you said, they ship the Q10 with PA9, so you would definitely be seeing a LOT of posts about it if there were a compatibility issue between them.
I hope you get it straightened out, man. Good Luck.