Not that I can go into great detail, but we're aware of this problem and we're looking at different ways to address it. I'm having a problem with updating also: my laptop installs the update, but it doesn't realize it installed. So, I'm continually prompted from Automatic Updates to update my definitions to a version I already have. Annoying. I wish I had a better answer than, "Hang on," but that's what I have.
Other than this update issue, I hope the beta is running well. Even if a different product seems like a better option, I appreciate the time you took to try ours.
Thanks,
Aaron