Wireless excessive WEP errors
WEP decode errors occur when a station attempts to associate with an AP but failed because it did not have the matching WEP key necessary to complete the association. This event occurs when the number of WEP errors exceeds the threshold set in Expert Thresholds.
Possible reasons for this event:
A rogue station is trying to gain access to your wireless network.
A legitimate user who needs assistance in configuring the correct WEP key.