If you visited the ZoneAlarm site, and used their online scanner, it probably left an active-x control that was being detected.
As a side note, I use ZoneAlarm FW/AV with Avast Home with no problems.
All 'On Access' processes are/ have been running, except for Outlook/Exchange monitor, because I don't use Outlook Express. No conflicts for the last 4 months, since installing both.