Problem karlsuss2 SNF 2010-03-01 00:18:34: Microscope X,Y buttons frozen again

[vilanova at snf.stanford.edu]

Dont know if this is happening because user has wafer pieces and the 
Objectives Are been moved beyond the limits,  Please use  the small 
pieces chuck or if not use the regular wafer chuck but dont forget to 
cover  one of the vacuum holes ( theres to of them one  on the bottom
Chuck and the other one that should be use to keep the wafer piece 
in place is on the top right hand size. ) tested ok to use.