I've upgraded to beta 2.4.3 pro, and so far I'm having lockup problems when starting LimeWire.
The Java engine is draining 99% out of my cpu for a long time, but it resumes to normal activity after 15-20 minutes.

Also, the connection list seems to refresh itself all the time, and when it's searching for new connections it often grabs all of the cpu.

Eventually, if I shutdown LimeWire, it clears all my download entries, so the next time I start the program it's with a blank download list.