Personally, I love it when I get a group with several people from the same guild when I am using the DF. It almost always leads to a group that works better and is more successful and I've only ever gotten kicked from one of these groups once. In fact my last two daily heroics have been completed with groups of 3+ people from the same guild. If you are getting kicked from groups that regularly, I'd stop and take a minute or two to consider if you are doing anything that might be causing it.