I occassionally get the Java error windows too. The Limewire error messages seems rather terse and useless; the "please cut and paste and email this error message to us" is ridiculous. The error messages thrown by Xolox are really informative (to a programmer, anyway) and they are automatically sent to the Xolox support team's web site. It's a really cool setup. Now is Xolox would also support live, automatic updates.

But I agree with your assessment--Limewire's stability seems to have degraded over the past few releases.