This is what i got from my contact:

It is JUCN submarine cable network which affected to 2x2.5G (Segment 7). Information was given by our International Submarine Cable Network Operation Center and the expected restoration time is 20th Feb 2009 (subject to weather condition).

“Due to JUCN cable repair btw Manchestr-Kitaibaraki-Maruyama, new ETTR=20/2 (sbjct to weather cond) Crrnt util btw KLJ-PA(i/o/Latcy (94/18)%/323ms) & BRF-LA(i/o/Latcy:(94/27)%/324ms). Expected performance to US degrade.”

Still waiting for their official announcement.