As for me, I'm sharing about 200 files, but I deleted all folders related to LW and Java VM (even the incomplete folder) and re-installed Java 1.4 and Limewire 2.4.3 once again and the same thing happened.

Now LW has been running for 12 hours, and things looks stable, but I'm only getting 5-6% of the search hits I used to get in earlier versions, and the connecttions also seems to "close themselves" much more often than before.

I also tried to decrease the number of connections (from 6 to 3) with no luck, they still disappear after a couple of minutes.

In ver.2.4.0 and later, it looks like the up- and downloads freezes after a while, and stays at 0Kb/s until I manually kill them.

Some other info:
I'm running Win2KPro on a PIII/800, 512Mb ram, 18Gb SCSI HD, 100MBit LAN with a 1024/256 ADSL connection through a Linux router/firewall.