[gillianseed]

Yeah I had a similar bout two years or so back.

A colleague had suffered the same problem and gave me instructions like taking a hourly break and doing a stretching excercise (rotate palm downwards and hold it flat with outstretched arm bending slightly upwards against a wall while tilting the head in the opposite direction for thirty seconds in three repeats), worked wonders for me and I've not had any problems since (still doing those stretches, although not as rigorously).