Both the DHCP/NetWare plugin for iManager and the java console (version from OES2SP1) have a year 2038 bug when dealing with DHCP lease times. When making a manual, but non permanent address assignment that has an expiration date beyond 2038, the expiration date will wrap and show a date in the 1900's.
The year 2038 problem (also known as "Unix Millennium bug", or "Y2K38" by analogy to the Y2K problem) may cause some computer software to fail before or in the year 2038. The problem affects all software and systems that store system time as a signed 32-bit integer, and interpret this number as the number of seconds since 00:00:00 January 1, 1970. The latest time that can be represented this way is 03:14:07 UTC on Tuesday, 19 January 2038. Times beyond this moment will "wrap around" and be stored internally as a negative number, which these systems will interpret as a date in 1901 rather than 2038. This will likely cause problems for users of these systems due to erroneous calculations.