this is a spookie one:
i have a ..let's say..friend, who says that if he tries to create a new object group using ASDM, instead of the new object-group (let's say GROUP_A) he gets also the GROUP_Areal1, GROUP_Areal2 and GROUP_Areal3, all of them containing some of the objects (not all) from the original GROUP_A group.
He has an 5520 and is using 7.0(6) and also has about at least 50 object-groups created, all togheter with more than 1000 entries.
i tried to reproduce it on a 5520 with 7.2.(3), but i had no problem.