In most cases, type 1, 2, & 11 errors usually indicate that there is not enough memory for the application to run properly. My rule of thumb [backed by almost 8yrs of Mac PPC support] is to raise the amount of application memory by 2 to 2.5 times. As LimeWire's prefered memory allocation is around 2.1MB, you might try increasing it to around 5.5MB. Ignore the FAQ and posts talking about 64MB ... this causes problems with LimeWire.

Also, in playing with LimeWire for a couple of months, I've found its not happy with piles of other applications open. If you need to have other programs open while using LimeWire, try opening LimeWire LAST so it has some breathing room.