Robert_Charlton - 7:15 am on Aug 28, 2012 (gmt 0)
hitchhiker - regarding potential technical problems, this particular comment caught my attention....
We auto-301 anything that has expired back to a near match.
In the current climate, I can imagine how it might raise flags if the redirection gets too far off a near match, or if the volume of redirects gets too large. Might be worth double-checking what it's doing.