I also have the bug with Haze IM contacts not appearing in the IM list, but IM contacts are still visible in the contacts book.

I never bothered having a shortcut to my contacts before as I used to access them through either the phone menu or new SMS menu, so I decided I need to add a shortcut to my contacts whilst the bug is sorted. I had a problem adding a new shortcut to my desktop, after I added it and pressed 'done' the screen was still in its adjustment mode. The icons could be clicked as if the screen was not in adjustment mode, and clicking on the top bar of the screen which was blank brought up the N900's menu which would normally be brought up pressing around the signal/taskbar area on a normal screen. Rebooting got me out of this mode, but then adjusting it got me back in again, third time lucky for me when adjusting this.