I can confirm that aMule hasn't the problem.
Now, I have compiled amule & amuled with wxGTK 2.6, amule is very stable and works very fine, but amuled don't upload neither donwload anything, or only 1 client uploading a few seconds a few bytes and nobody in queue.
amule: active connections 60 more or less.
aMule CVS using wxGTK2 v2.6.0 (Unicoded) (Snapshot: Sat May 7 07:01:19 CEST 2005) (OS: Linux)
aMule Daemon CVS using wxGTK2 v2.6.0 (Unicoded) (Snapshot: Sat May 7 07:01:19 CEST 2005) (OS: Linux)