Comment 33 for bug 293207

Might be, although keep in mind that I had the problems going in the other direction: backup was made on a 64-bit Hardy system, and I was restoring to a new 32-bit Intrepid system. I don't know enough about the differences to know whether or not this would be an issue. Still, you're probably right that this could be important. (It may also explain why upgrades seem to work fine, since by definition, these will always be either 32 to 32 or 64 to 64.)