I was wondering if anyone else was having this problem: After LauncherPro updates from the market it forces the home screen to open the dialer and will get stuck there. The only option is to double-tap the home button and re-select LauncherPro as the default launcher. This will bring you back to the home screen as if nothing had happened.
It seems to me that after LauncherPro updates it should go back to your home screen with it already selected as the default launcher - not the dialer.
As a side note, if anyone else is in fact experiencing this, you may want to disable the auto-update feature for it in the market (FroYo only). LauncherPro updated itself overnight, locked up my home screen, and kept my alarm clock from functioning. Luckily my kids decided to wake me up early this morning.