Always mocing, still when project is not changed

When using two instances of VS 2010 with the same vcxprojs but different sln i.e. on two win2008 terminal sessions, and one of the instances is set to win32/debug and the other is set to X64/debug, always almost starting compile or debug, moc processes start, still when nothing was changed.

Problem is GeneratedFiles, it is divided into release and debug, but not also divided into platforms. So the default should be ./GeneratedFiles/Win32/Release | ../Debug and ./GeneratedFiles/X64/Release | ../Debug as default. In standard use, the moc_ files are shared in X64/Win32 and this seems to be the problem....

When only one instance of VS 2010 is running on one of the equal solutions, no "random" moc runs does occur...