Dragan-

>Don't you hate that sort of problem, when it starts behaving eratically with no apparent reason?

Particularly when it's such an inconsequential detail, or should be, and it ends up taking _hours_ to debug and interrupt the probably much more difficult part of what you're _really_ doing. You bet!

> And when the fix doesn't seem to make much more sense either?

That, too. I spent some time trying to figure out from one of these ill-behaved SCX's what the hell was causing it, but I couldn't figure it out. And since I couldn't recreate the problem reliably, I never posted a bug report, either.