Harry,

That is one of the faults of the VSTpro: going (and staying) below the MA at a time that the slope of that MA is not going down for two days in a row yet.
This kind of a situation does not happen frequently but it can (and it has) happened.
Therefor I started to do some research in combining the VSTpro with another market trend filter, in my case the 20DMF.
The 20DMF also has its flaws. For example just missing by 0.3 the level of OS and therefor not going long end December 2011.
The Combo-MF, which is a combination of the VSTpro and 20DMF, proves to be working all the time, because it is a model that goes to a neutral state if both "parents" do not agree.

PdP