Under Ubuntu Edgy 6.10 I had problem with the webserver, amuleweb, but I solved them.
I uninstall completly amule
I rename the config folder:
$HOME/.aMule -> $HOME/.aMule.old
I reinstall it.
Then I copy
/usr/share/aMule/webserver/
in the config folder:
$HOME/.aMule/
Then don't forget to add password through Preferences