After I upgraded to 1.5.5-pre I have noticed that it loads CPU very much, even when there is not much to do. On a four core machine Seq is constantly responsible for 50% CPU load.
Another observation: attempt to stop the service never succeeds - it waits for a minute and then timeouts. CPU load quits though, but Seq.exe keeps running. Service is stuck in Stopping state until it is killed.
Konstantin