I too can confirm all these problems... G4 400 with 1GB RAM... Running the newest lime wire and latest update from Apple 10.2.2. SLOW AS SHIZNIT! I have been using limewire for about a year now and never had this problem... Also I have not seen any posts here from anyone at limewire to let us know if they are going to get a fix together for this...

Looks like it is Iswipe for me till this gets fixed.

Later