I don't know exactly since when but my CTRL-M CTRL-M to toggle regions is not working anymore.
I have already the keyboard mapping. I have alo resetted all settings from the import and export wizard.
I have checked the keyboard options and CTRL-M, CTRL-M is propertly assigned to "Edit.ToggleOutliningExpansion".
The menu under "outlining" shows correct shortcut keys.
I don't have other tools loaded in VS2008.
Any other ideas? it used to work.