Is this caused by Sobig?

["gregh" <chows () ozemail com au>]

See attached text file.

As many of you are, so am I being pinged quite a lot. So, I checked out a few of the pings and I am getting this same 
thing each time.

Is this an effect of Sobig? I hadn't noticed anything quite like this before a few weeks ago.

Greg.

Attachment: pert.log
Description: