Error while starting the listener for the SIP protocol

[Haneef Bashir]

i have been having a problem with ekiga and wengo which i believe to be
connected  when i open ekiga this message pops up:
You will not be able to receive incoming SIP calls. Please check that no
other program is already running on the port used by Ekiga.
I am not aware of any other programs running on the port. another problem
that i have noticed is that when i uninstall a program like ekiga or wengo
my settings for those programs are saved, so when i reinstall them its as if
they were allways there. how do i stop this from happing and make it
reinstall as if it was for the first time? any help would be appreciated.
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