Mailboxes getting hit with virii - netsky.b?

[Bullit]

Hi,
Please see pic attached

My hotmail and home account have been hit with a succession of virus infected mails.

1) they are coming from real established addresses
2) the senders would not have had my address previously
3) they seem to be genuine non-malicious addresses
- some are irish - scope.ie and a company called lasrtech.ie

any ideas why this is happening? the main virus seems to be netsky.X

Would like to know what's going on

Cheers

 

[ADZ]

http://www.trendmicro.com/vinfo/virusencyclo/default5.asp?VName=WORM_NETSKY.B