I'm using an ADSL modem to connect to the Internet, and sometimes the link gets dropped and reconnects, in which case I get a different IP address, so existing KTorrent connections with old IP address no longer work. I need to manually kick the peers for KTorrent to find newer ones. Is there a plugin that kicks existing users after some time of inactivity?

p.s.: I know of the option "Decrease priority of torrents after N minutes of inactivity", but I'd rather go on with the existing download.

I use a dynamic internet connection too, but never have problems with changing because my mac address stays the same.
You should either ask your ISP to not change ip-adresses in this way, or KTorrent should detect when there is a ip change on the WAN side and ditch connections with an "new announce". But i do not think BitTorrent is even made for this, seeing that you then supply statics from an old session on a new ip-adress.
So... your complain should be treated by your ISP. Sorry.

Obviously there are two ways of fixing the problem: (1) get a static IP address from ISP so it never changes; (2) work around the issue by kicking off stale connections (which use old IPs). (1) is obviously off-topic here, hence (2).

So... what you are saying is that the old connections can get forwarded from your ip to a new ip when you get a new one from your ISP? This i did not know.
You will have to talk to George about this, but you then do depend on port forwarding on the other side when you are about to re-use ip's. So i think you can better just complain.

stoeptegel wrote:So... what you are saying is that the old connections can get forwarded from your ip to a new ip when you get a new one from your ISP?

Not in the slightest. Do you know what kicking a user actually means?