I get that too.

I'm using 2.4.4 Pro, and it:

1. Will not connect to more than 3 hosts at startup, (I have a T-1 ans am set for 10 hosts.)

2. After a time, it will not connect to new hosts when old ones disconnect.

The only way I've found to fix it is:

1. If you still have at least 1 host connected, re-type a number into the "Keep approximately __ connections up." field at the bottom of the screen.

2. Restart Limewire.