this happens [occasionally] when starting up?

if there is a download that seems to be stuck in 'connecting' state, or hasn't really progressed (or if there's only one download), then i'd suggest killing it.

it looks like its trying to send a push, and the push is happening before some other things are initialized. i'm not actually positive if this is the reason, but it can't hurt to kill the download & try.

this shouldn't stop you from using limewire anyway, though -- it would just stall the download it was attached to.