I've set the global peer limits to 200 and 60 for each torrent. Why are there 4000 connections according to my router? As soon as I quit transmission the connections drops back to 200-300. Is this a bug??
Sounds like your router has a longer than nessary timeout for connections. Bittorent opens and closes connections rapidly and some do not complete. This can be adjusted on some routers and sometimes in great detail on 3rd party firmware.