well when you disable the UDP-socket, you will receive your sources for files slower...but this does not mean you wont get any sources.
so dont worry about it.
about your clicking on transfer page: works fine here....
sure you have an up2date version of your aMule.tmpl,
if you always do "make install" after compiling you should be fine tho, if you dont do make install all the time, check if you have a recent version in /usr/share/amule or /usr/local/share/amule...
stefanero