Pidgin PPA causing significant problems

[mdovell at comcast.net]

Recently I have updated to 11.10. For some reason I am getting error messages when searching for updates. Pidgin ppa has some sort of problem. 
I removed the references to pidgin in the sources list but I don't think that helped. 



Update manager now does not work and asks to do a partial update which seems to end after "prepairing to upgrade" 


Software center now states 
"There seems to be a programming error in aptdaemon, the software that allows you to install/remove software and to perform other package management related tasks." 
and 

"Traceback (most recent call last): 
File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 968, in simulate 
trans.unauthenticated = self._simulate_helper(trans) 
File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 1092, in _simulate_helper 
return depends, self._cache.required_download, \ 
File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 235, in required_download 
pm.get_archives(fetcher, self._list, self._records) 
SystemError: E:I wasn't able to locate a file for the pidgin-ppa package. This might mean you need to manually fix this package." 


>From terminal if I update I get 

"W: GPG error: http://ppa.launchpad.net natty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7FB8BEE0A1F196A8 
W: Failed to fetch http://ppa.launchpad.net/pidgin-developers/ppa/ubuntu/dists/oneiric/main/source/Sources 404 Not Found 


W: Failed to fetch http://ppa.launchpad.net/pidgin-developers/ppa/ubuntu/dists/oneiric/main/binary-i386/Packages 404 Not Found" 


I think there has to be some ppa added but I'm not sure where or what. 



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