Just installed Group Office 2.11a last night. The installation went really smooth. I was really surprised how intuitive the install script was. After I installed group office, I had all sorts of fun with PHP "Safe Mode" and open_basedir restrictions but I smoothed out all the wrinkles and have to say. . . awesome job guys. This is a really powerful Groupware application with style and speed.
I have tried just about everyone of them out there. This application is a strong contender against the commercial apps - Office4, Share360 even EdgeDesk
Keep up the great work guys.