tap hole does not show dashed line for bottom

I did not use very often SolidWorks 2008, until SP 3.0 wasreleased. With SW 2008, SP 3.1 I encountered lots of problems: inassemblies, in parts modeling, drawings.
Before sp 3.0 my drwdot template with defined layers worked fine.
After S.P. 3.0 every thing is gray or black. Now I found out thattap holes are looking the same way like clearance hole (no dashedline for bottom of tap hole).
Is anyone having similar problems????!!!!
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