udev is choking my server: over 20000 udevsend processes

When I set log priority to debug via udevcontroll, I see that udev constatly adds and removes /class/vc/vcs10 ??? What the hell is going on?

Apr 11 15:39:03 [udevd] msg_queue_insert: seq 17166 queued, 'add' '/class/vc/vcs10'
Apr 11 15:39:03 [udevd] get_udevd_msg: udevd event message received
Apr 11 15:39:03 [udevd] main: skip uevent_helper message with SEQNUM, netlink is active
Apr 11 15:39:03 [udevd] msg_queue_insert: seq 17167 queued, 'add' '/class/vc/vcsa10'
Apr 11 15:39:03 [udevd] get_udevd_msg: udevd event message received
Apr 11 15:39:03 [udevd] main: skip uevent_helper message with SEQNUM, netlink is active
Apr 11 15:39:03 [udevd] msg_queue_insert: seq 17168 queued, 'remove' '/class/vc/vcs10'
Apr 11 15:39:03 [udevd] udev_done: seq 1911, pid [8389] exit, 158 seconds old
Apr 11 15:39:03 [udevd] udev_event_run: seq 1913 forked, pid [8404], 'remove' 'vc', 158 seconds old
Apr 11 15:39:03 [udevd] get_udevd_msg: udevd event message received
Apr 11 15:39:03 [udevd] main: skip uevent_helper message with SEQNUM, netlink is active