Hey James,
probably the PecosRiverM explanation was what happenned. Pending Validation results many times appear when we don't expect nothing, mainly if you act as a wise guy and just left yours WCG profiles and Boinc clients installed in yours machines manages the actions related with processing and returning of Work Units (I personally guess that the micromanagement dosen't working very well in long term aspects).

If was the PV queue the cause, you ever can check what device under yours was resposible to produce this results at that days just checking out your Device Statistics per device... (maybe some extrapolation and deduction will be need if you have many devices...).

Other possibility could be a device out of your eyes installed by you in some remote machine, in the past, which could scape by now out of your control (just a remote option to be considered).

I only have WCG installed on two computers - the other one is old, and is sitting on my floor somewhere and never sees the Internet.
So, the things that I process, are also processed by one or more other clients (wingmen?), and if they all return the same results, then WCG knows that the results are valid? That makes sense.
So, the results "returned" while I was away are actually chunks of work that my PC had already uploaded (pending validation?), but the last of the results of processing the same chunk of work by one or more wingmen were only finally uploaded by those wingmen when I was away? OK, I think I understand, and I'll definitely check that Last Result Returned next time.
OK, thanks for allaying my worries then!

Hello James D Richardson,
It sounds like Pending Validation to me. You can confirm this by reading STDOUTDAE.TXT in you BOINC directory. It keeps a copy of all the messages in the Message tab of BOINC Manager.

Lawrence