If anyone having the issue could actually test the beta and report back if the problem is really solved, it would be greatly appreciated.
The proposal of the OP was exactly the opposite: Avast Team could/should participate at those MS forums to "publish" the new beta, minimize the impact of those "uninstall Avast completely and forget about it" suggestions, and finally Avast could have some more testers about the issue.
Since the issue is actually a crashed system, I don't think that users are waiting for the stable release. They either accept using a beta (if they actually know that the issue may be resolved), or they change to a different tool.
Avast should had released a new stable with at least this issue resolved (and any already solved critical problems), if not for the users of Vista "pre SP2", for the bad PR. All the "extra" (read, non-critical improvements) could have wait in the beta step. Just my opinion.
Just two things to note:
1. as someone above said, the result is not a system crash. It's Windows reporting as having detected an "unauthorized modification".
2. We would have released the update earlier if only the problem would have been solved earlier. The main problem was to actually get a computer with the problem simulated. If you look at the MSFT forums, you may fall into the impression that the problem affected pretty much all Vista users. But this is simply not the case.... we tried tens of various Vista installations, with various HW and SW configurations, and were simply not able to reproduce the problem. This is probably because the licensing checks are done only "randomly", as one of the MSFT forum moderators pointed out... which makes its testing very tough.
Thanks
Vlk
A few more bruises in the Avast 6 - Vista conflict to report here, if it can be any help - and if you can help me, even better !
Configuration : Windows Vista Edition Familiale Premium (don't think you'll have trouble translating that!) on a Sony Vaio VGN-CR11Z/R (4 years old)in France. And whatever versions of Avast Free available over these last 4 years.
First error 0XC004D401 mid-June when I'd just installed the new Avast 6, problems solved early July thanks to replies to a post on the Free/Pro/Suite Forum : restoration of Vista, disinstalling/ reinstalling Avast. For details, please look at the topic "Avast 6 update and Vista".
Very pleased, all back to normal, problem solved... Version 6.0.1203 up and running.
This morning, wham! bang!, same error out of the blue while I was working on the computer. On checking, I discovered that Vista had just uploaded an update of Windows Defender.
I seem to have got things working again, but have put updates from Windows and Avast on hold for the moment, as I'm not sure I've got everything right.
Sorry I can't be more technical - my computer training goes back to the year hard disk drives were invented (oh what a giveaway

). I've read forum posts for 2 or 3 hours now to no avail, but am willing to be a guinea pig for testing solutions.
Any ideas ?
Thanks in advance