Just to clarify, the "another system" I tried it on (with 5.8.8 and threads 1.07) was a mac running leopard.

I also tried it on a snow leopard install with perl 5.10 (darwin-thread-multi-2level) and threads 1.67.

Also, both mac's are intel (possibly obviously), but the linux box is a 64bit AMD machine.

I'm seeing the issue everywhere I've tried it so far, so it doesn't seem to be a platform specific issue. Sorry I didn't make that clear in my last post.

ps. I just tried it on another debian lenny box that's basically the same as the one above, but it's intel, and had the same issue.

I may give cent and ubuntu a shot later tonight and see if I also see the problem there.