I finally opened this one up and took a look inside.
The PSU voltages looked fine on the oscilloscope and I couldn't see anything obviously wrong there.
I still experienced some resets/crashes but they seem completely random.
We = Me, my girlfriend and our cats. I'm sane enough not to include the synthesizers in the "we". But of course I moved them too, and "they" got their own room ;)
Ok, it was almost 4 months ago since we moved, but I didn't feel it was worth posting until the "studio" was in at least a "useable" and presentable condition. I guess it is now!