I have an IBM SP2 that is running AIX 5.2. The control workstation will not boot successfully. The boot process gets past all the hardware checks, however, fails right after the boot process gets past Starting AIX. The system hangs and the error on the system LED is 406700A0U0.1-P1-Y2 with a lightning bolt. The system has been running fine with no problems and an IBM CE was out and reports no hardware problems. I did an extensive search on the internet and could not find any more information on this. I believe that U0.1-P1-Y2 is the current firmware level on the server. Has anybody seen this before? Thanks much!