Logs showing GET /.hash=...

[Keith Bergen <keith () keithbergen com>]

I have seen log entries in the form:
dormtw.isu.edu.tw - - [29/Apr/2003:22:04:17 -
0400] "GET /.hash=8a8a30842bc6698dd1cbcb31191fc9e76018ea4c 
HTTP/1.1" 404 323
dormtw.isu.edu.tw - - [29/Apr/2003:22:04:22 -
0400] "GET /.hash=355bcee01e59b87d9cc33d4ae3cc8edf5f022d2a 
HTTP/1.1" 404 323
dormtw.isu.edu.tw - - [29/Apr/2003:22:04:24 -
0400] "GET /.hash=51f6ec2b496fa6fac83a88d7978321c7b64a5969 
HTTP/1.1" 404 323

I looked at past posts, and one indicates that this might be 
KaZaa traffic. The other post indicated it was "WinMX". Can 
somebody expand on this? For example, what is WinMX? Also, 
why would KaZaa connect to port 80?

Thanks,
Keith.

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