I've noticed a peculiar thing: the call log seem to have double entries in some cases... From what I could observe, this happens when the call goes to the FPL voice mail, but can't tell for sure. One thing is that all double entries seem to occur only on the 'inbound' calls.
Some of the examples are below:
416979xxxx 1416<mynumber> 01:26 2010-01-26 11:11:24.0 2010-01-26 11:12:50.0
416979xxxx 1416<mynumber> 01:26 2010-01-26 11:11:24.0 2010-01-26 11:12:50.0 Ontario
888907xxxx 1416<mynumber> 0:12 2010-01-21 19:20:07.0 2010-01-21 19:20:19.0
888907xxxx 1416<mynumber> 0:12 2010-01-21 19:20:07.0 2010-01-21 19:20:19.0 Ontario