Processor #0x40 | IERR | Asserted

Does anyone know what is the meaning of these errors in the SEL log:
2 | 06/12/2006 | 07:33:54 | Processor #0x40 | IERR | Asserted
3 | 06/12/2006 | 07:33:55 | Processor #0x41 | IERR | Asserted
4 | 06/12/2006 | 07:37:31 | Processor #0x40 | IERR | Deasserted
5 | 06/12/2006 | 07:37:31 | Processor #0x41 | IERR | Deasserted
6 | 06/12/2006 | 07:40:10 | Processor #0x40 | IERR | Asserted
7 | 06/12/2006 | 07:40:10 | Processor #0x41 | IERR | Asserted
8 | 06/12/2006 | 07:43:35 | Processor #0x40 | IERR | Deasserted
9 | 06/12/2006 | 07:43:36 | Processor #0x41 | IERR | Deasserted

This is a Dell PowerEdge server.

Regards,
Ilian