Right, some belated answers, sorry for any delays but I don't have time to be trawling tmo everyday anymore:

• Contacts will only be created if Accounts > Create birthday-only contacts is ticked.
• Data should only be overwritten if Refresh is pressed. Retrieve will only pull in data.
• I've not seen the Profile_URL error before. Please run /opt/hermes/bin/hermes from X Terminal and copy and paste the output into a new bug report.
• Some people don't allow applications to access their profile pictures. This is unfortunate, but there's nothing I can do within the Facebook T&Cs.

HTH,

Andrew