On Mon, 11 Feb 2008, Erik Slagter wrote:

Symptoms: when I remove (unplug) a USB keyboard or mouse, the 
corresponding event device seems to be closed but not released; when I 
plug the device back in, it gets a new input device handle. This means 
that after several suspend/resume cycles (in which it seems all usb 
devices are virtually unplugged and replugged) the kernel is out of 
event devices and complains likewise. My nice little program that 
catches specific keystrokes also stops to get any interesting events 
from that moment on. After reboot everything works again as expected.

Hi Erik,

this is very likely bug in HAL -- please see 
https://bugzilla.novell.com/show_bug.cgi?id=344872

-- 
Jiri Kosina