on thing more, that hasn't never happent before updating to p7.
It could be minor updates to the scheduler, disksystem etc. which
triggers this error, but only appears as a result of two or more
factors, which weren't present before p7.
We experience this problem on all 5.4 releases and occasionally on
4.10 and 4.11. All systems are Dell 1750's. Looking at the changes
present in p5, p6 and p7 it seems unlikely that that has caused it,
but if you have found why this occurs please respond back to the
list! If you do a serach for SMP and Dell you'll find my older posts