Thanx for the tip Arunbear , but, as I hinted in my original posting, I simplified the actual implementation in which I saw the problem - in that, there are in fact (currently) 3 package scoped variables ... love the idea tho'.
Thanx also for the tip on Test::Class - didn't notice it in the Testers Lab book (chromatic at al)...
Rgds to all,
At last, a user level that overstates my experience :-))