I once had an experience bomb in the catacombs of Aleroth. Somwhere there is a stairway to a gigantula-spider. After killing the spider I was pushed from level 4-5 up to level ~30. This was before the patch was installed, so I decided to install the patch and start again (no fun being level 30 in the catas)

I think this bomb was also listed in the fixed-bugs list of that patch. (not sure).

das ist kein Wolf, sondern ein Sparschwein