Apache: Invalid method in request \xe3P

[Skipper]

Hallo,
heute habe ich seltsames in meinen Apache-Log's entdeckt. Es fing genau um 0.30 heute Morgen an und dauerte genau bis 12.00 Mittags, insgesamt mehrere tausend Zugriffe von verschiedenen IP's (seither ist wieder Ruhe):


[Wed Dec 11 00:29:27 2002] [error] [client 217.88.166.34] Invalid method in request \xe3P
[Wed Dec 11 00:29:37 2002] [error] [client 217.88.166.34] Invalid method in request \xe3P
[Wed Dec 11 00:29:37 2002] [error] [client 217.88.166.34] Invalid method in request \xe3P
[Wed Dec 11 00:29:42 2002] [error] [client 80.37.45.98] Invalid method in request \xe3=
[Wed Dec 11 00:29:50 2002] [error] [client 80.142.30.235] Invalid method in request \xe3B
[Wed Dec 11 00:30:08 2002] [error] [client 212.58.175.4] Invalid method in request \xe3Y
[Wed Dec 11 00:30:17 2002] [error] [client 217.224.241.173] Invalid method in request \xe3=
[Wed Dec 11 00:30:22 2002] [error] [client 66.214.129.48] Invalid method in request \xe3<
[Wed Dec 11 00:30:29 2002] [error] [client 80.129.118.72] Invalid method in request \xe3P
[Wed Dec 11 00:30:33 2002] [error] [client 217.225.72.166] Invalid method in request \xe3@
...

Was kann das sein? Google hat mich nicht viel schlauer gemacht.