akamaitechnologies.com -- eating bandwidth. PC's not being used, and just turned of after being off for a long time

Any idea what this might be?  The PC's do have AV -- but the AV updates from an AV server.   The PC's were not being used -- they were just turned on after being off for many months.  

When the PC's were on, I was getting inbound traffic from akamaitechnologies.com maxing out my 2Mb of bandwidth.  

Any idea what might cause this?
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atlas_shudderedConnect With a Mentor Sr. Network EngineerCommented:
If it's SUS you'll see the traffic reaching out to a windows address space.  My guess would be that you've got adware that is attempting to chatter out and attempting to re-sync.
atlas_shudderedSr. Network EngineerCommented:
No problems on this until you booted the machines?
XetroximynAuthor Commented:
And no problems after shutting them off.     I am thinking it might be windows updates.   All the machines are very out of date and are trying to catch up at the same time.

XetroximynAuthor Commented:
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