Login and Passwords
In response to enyaj, may not help the OP.
Wow I have been having the same problem for some time now (FB for HTC Sense not linking up profile pics with contacts), and my wifes phone would always error on photo uploads) figured out that I changed the FB password awhile back to prevent a possible hacking video issue. If you change your password on FB and use FB for HTC Sense, you must go into: Menu> Settings> Acctounts & Sync. Then delete your FB for HTC Sense account. Then just add account (bottom of screen) FB for HTC Sense and login with the correct email and password. Bam all my contacts pictures sync'd with their FB profile pics, status updates and such are working also. Hope this helps.