They have some problems with GPC#3. When they brought it out of "stand-by" it failed to initialize properly. Theytried an so called "IPL loading" but that failed.
More troubleshooting is to come after the docking.
Also, one of the TPS blankets on the starboard OMS pod have pulled out a bit. The Expedition 16 crew have been given instructions to photograph the OMS pod during the R-BAR Pitch Manuever.