I had a big problem with Virtual Earth Mobile. First of I couldn't get the GPS to work but after a while of fidgeting with it I realized that it was messing up my start menu...
what happens is the icons around virtual earth mobile's icon in the start menu start to duplicate until the list becomes so large that you have to press arrows on it to scroll through it and it also turns white and blanks out the names of the programs.
It resets whenever you make a change to the start menu (i.e. removing a program from the list) or reset the device but it the problem persisted until i finally uninstalled the app....
kinda sad
thought it would be fun to play with but not at the expense of my start menu