The only thing I can think of is that when they upgraded your DS, that they might have put the boot disks back to factory default?
Out of interest - what happens if you issue a job with just PAUSE? Does it run on either of your boot environments?
I should stress here that I'm no DS expert - I've come to both love and loathe it with all of its little "quirks"... Currently I'm more heading towards the latter!!
Cheers,
Gerard