IE7 in Windows Vista Event ID 1025 & 1037

Internet Explorer / IE >> IE7 in Windows Vista Event ID 1025 & 1037

My eventlog for internet explorer 7 gets filled up with events 1025 and 1037
(at least one entry per minute).

Event description for this is not available in Windows Vista and also not in
MS event log online help.

Who can help and tell me, what's the meaning of this entries ?

Internet Explorer45