Logged In: YES 
user_id=358087

1. How do I find the largest user id?
2. It's 4294967294
3. Can't attach etc/password since it's a company machine
(IT will kill me :-)
    However there is a similar line for nobody with 65534

The hardware is 4 CPU with 16GB of memory.
OS is: Red Hat Enterprise Linux AS release 3 (Taroon Update 3)