Cause

With SunPC 4.1 and the 102924 jumbo patch installed: when a user attempts to run SunPC, the following error message is displayed:

SunPC may NOT run correctly as root.
Please run in user mode.
SunPC script is exiting

The user's primary group id is probably root. For example:

$ /usr/bin/id
uid=33650(gruff) gid=0(root)