Right. Its still the same version I was running in 10.4.9. Actually its not Leopard. The problems started as soon as I upgraded to 10.4.10 and its not just aMule I'm having issues with since upgrading past 10.4.9, but that's not for this forum. I think 10.4.10 to 10.5.2 were/are bug ridden because Apple rushed the updates without thorough testing. Its certainly been acknowledged that Leopard was severely rushed to market. So blame Apple and I expect 10.5.3 to create just as many issues as what its supposed to fix in 10.5.2 - which was supposed to fix 10.5.1.....etc.
On the other hand you have some here saying they're not have any issues at all since upgrading so explain that!