Here is what you need to get the keyboard working perfectly.
http://forum.ppcgeeks.com/showthread...78#post1256678
If you open Showcase Settings app you can select hide from home screen.
That will remove the stuff off the clock but it still works when pressed.
You can also map Showcase to a hard key or softkey.
Not sure about what is up with Total Commander.
Mine works great when holding down for menu.