See attached screenshot. Reproducible: Always Steps to Reproduce: 1. Configure facebook chat 2. Open application and hover over one of facebook contacts 3. See that profile pictures are in low resolution Actual Results: Resolution of images should be like on google talk or MSN (high resolution).
Created attachment 84783 [details] Screenshot
Facebook only give us tiny avatars via the XMPP interface, there's not a lot we can do without being able to change their servers. With the ongoing metacontact work it will be possible to set up an Akonadi Facebook resource (which uses the other Facebook API) and then associate those contacts together; thus giving you the better avatars.