Something wrong with CPU usage?

[Zogu]

I've mentioned before that WW uses nearly 100% CPU while I'm playing... but now I've just realized that even the launcher uses that much juice.

I don't think it's normal. I've got a fairly good computer, a P4 with 512mb RAM and a 128mb video card. So why would the launcher, which is a simple graphical menu, load my CPU to that level?

Anyone has an idea on the possible causes? Is there something very specific in the game's threading? Something somewhere must be polling like crazy, or maybe missing some thread_yield() calls.