[quote="leo"]So whether or not Opus was installed had no effect on the speed of the menus.
The debugging steps for context menus may help locate where the problem is. They will make Opus indicate which part of the menu it building, which may show you where the delay is.
If you've already tried disabling all shell extensions, it could be something like a Send To shortcut pointing to a network device that doesn't exist on your home LAN.[/quote]
sorry for the confusion, english is not my native language. To clarify the behaviour: If Dopus is installed then the speed of right click Menus is slow (exception: Right clicking on a desktop item); even with default configuration.
Fortunately with your suggestion I have identified the "bad" shell extension: Perforce shell integration
Thanks for your help,
t.