Tim,
I should have thought having such a low ID would cause more problems
than you mention. Low IDs are regarded as system IDs, rather than user
IDs, and as such, *can* have more privileges. i.e. They're treated
differently. The logon interface not showing system IDs being just one
example. There could be security implications.
I suppose that's what you get for having backups and a filing system
whose contents date back to 1994 on Linux and another seven years
before that on an old Microport System V Unix (on a 286!). *We* never
asked anyone to change the UIDs.
Jonathan