I am also seeing bandwidth problems in 2.4.0. i used to get 3.5kb/s on the old Lime Wire using my 56k but now it wont even get to 3.00.
Also the meta data searches for MP3's are pretty bad, if i type in an artist and a title it brings back totally irrelevant files which have a couple of the words from my criteria in them. For example if i type the Artist "Ash" and the Title "Goldfinger", it brings back results from bands called "Goldinger" with the track name "Open your eyes", all it did was found my track name i searched for and found an artist with the same name. I hope the meta data searches won't be that hard to fix. The only search which is good for finding specific tracks is the "Any Type" search window.

Anyways keep up with the development.