[Lula] Perl and Sleep problem

[John R. Hogerhuis]

Besides looking at whether there are multiple threads, you could also
see if the application has any other external event sources
(callbacks/signals). That could also make it look like sleep() wasn't
working.

FWIW, I write/run a lot of scripts on Linux that the rest of our team
uses on XP. I don't use sleep() much, but I'm pretty sure I would have
heard about it if timeouts via the select() routine didn't work on XP.
A lot of our tests wouldn't pass (we use Perl for regression testing).

-- John.