I don't think another distri will solve it. I had used Mandrake, too and never got this error.
Before that it was RedHat also with no error.
And now on Gentoo even no error. So I think the problem is located somewhere else. Trying to post your system config here.
e.g. fstab, .eMule, ldd amule, etc...
So we can see if there is a problem with your config...
Greetings
Galizah