Phone freezes when I answer a call....

[sdruid]

When I click the answer button to answer a call, the phone sometimes just freezes and the main popup call window never pops up, but the small answer and disconnect windows appears to be stuck in limbo at the bottom of the screen.
I tried uninstalling programs and clearing out cache and so forth but nothing works, phone still gets stuck when trying to answer a call.
The extra rings is the only thing that appears to help at times otherwise I wouldn't be able to catch the call before it goes to voicemal.

any help would be appreciated...