~misfit~ wrote:

There must be a few WUs getting lost out there. You know how each
unit is sent out with a _0, _1 and a _2 suffix so that each unit is
calculated three times and cross-checked? Recently I've noticed a
few _3's and _4's and today I got a _5. Obviously a few results are
being lost or not returned. My understanding is that, if all three
'units' haven't been returned by the expiry date they send out
however many other copies are needed to get the three results. A _5
must mean that all of the original three units were lost.

Just thought I'd mention it. Anyone seen one higher than _5? Just
curious. --

I've had _7 once.