I have also just "upgraded" to the version stated in the OP's post. It's been on the system for nine days and still causing enormous problems. At first, every single internet page took the vsmon.exe to 40-70% of process activity, even a reload of a page would do the same. A re-boot has taken that down a notch but it's still jumping to 20/30% on most new pages. I was under the impression that it acted upon applications, yet it seems to react to internet addresses, learning some and allowing them through more quickly. Even then, something that was unnoticeable on the last ZA version has become intrusive.
When I use Firefox's private browsing, every single web page takes the vsmon.exe back up to 70% or more activity. This is why I think it learns web addresses because the private browsing forgets the address. Go back to "normal" browsintg and it speeds up, back to private and it shoots up - a repeatable and consistent test.
Downloads render the PC unusable whilst the download is in progress. The vsmon.exe maxes the processor out every time now, whilst before it didn't come into the equation at all.
I am running XP and have no plans to move to Windows 7, so that's not going to be an option to fix this issue for me. I also use Firefox v8. The recent upgrade preceded the ZA upgrade and was running OK prior to the latter.
I have taken a look at the link in post three of this thread but it offers little help. Option 2 - number of alerts to 50 - is that a free feature? I can find nothing where this might be set in the app.
There are no alerts in event log that relate to ZA.
With respect to the developers, looking through other apps to find the "conflict" is rather avoiding the issue - it's my belief that the conflict is ZA itself.
I'm also one step from removing ZA because it has impacted to detrimentally on performance.