Yeh, mines going in for the service this week, it seemed to have just started squeeking as soon as the clock rolled over to 100k... not one km before then...
My friend had the exact same problem on his silvia about 2 weeks ago and the mechanic re-packed it with grease, so far its going ok, but this is really just a band aid cure... i'd rather get a new bearing, but it is hard to justify paying $290 for a bearing which otherwise would only cost around $10...