Hey Nuts,
I’m still hacking away, though the Olympic spectacle has slowed other things down for the time being. It’s been quite a show so far. Have a new plugin I’m finishing up that will be a lulu. I think you’ll like it. 
Anatom,
From the Camtasia forum I now gather that I’m not the only person with this loss of sync problem… and it may be specific to release 5 and 5.0.1. What happens is I record a demo of a process with real-time voice over (VO) that might last for 10 or 15 minutes. When I play it back, the audio gradually gets ahead of the video so that actions on the screen happen further and further behind the comments that explain them. After 15 minutes, the offset grows to be about 10 seconds or more. When I convert the file to .swf or .avi the same sync gap remains.
I can probably resolve it in editing, but I’d rather just fix the problem inside Camtasia if I can.
Sven