well, it says that your memory is becoming dead:

UDBH Syndrome 0xc8 Memory Module Board 7 J3300
[AFT0] errID 0x000054d0.90e01b51 Corrected Memory Error on Board 7 J3300 is Intermittent
[AFT0] errID 0x000054d0.90e01b51 ECC Data Bit 3 was in error and corrected

that's a memory bank on one of your systemboards.... :
http://www.sun.com/products-n-soluti...02-5032-15.pdf

gP