Sorry for posting in such an old thread, but since other people are having the same issue I figured it would be good to reply.
I got a new scope from Saelig a while ago, but nearly identical behavior. I figured this would be the case after so many other people saw the same issue.
Since there is now a way to downgrade from 00.02.05.02.00, I was able to do the normal DS1052 -> DS1102 hack, and as part of that went back to firmware 02.04 sp1 (whatever specific version that the ds1052 hack thread recommends, can't remember).
The problem seems to be entirely gone, and I have a much better scope to boot!
So yeah, go forth and downgrade.