I've just found one in the RRD datasource plugin, but aside from that, there have been none reported so far, and plenty of downloads...
Actually, there are a couple of editor problems I need to look into, but nothing too disasterous. The problem I found today was with '-' DS names for my firewall session counts. Fixed now, I hope.
Thursday Update: Three more today. 1) If you have a default TARGET, then it was used *in addition* to any you defined in the node or link. 2) Config reader was broken for asymmetric links. 3) BWLABELPOS was the wrong way around - it should be in-position then out-position, but it was doing the opposite.