I found the same problem with my new server motherboard. With irqpoll kernel option first everything seems good, but I miss the installation DVD, and booted the 32-bit edition.
The server installation was about three hours(!).
WIth 64-bit edition (and irqpoll option) the installation was about 5 minutes, and the system seems stable, but the kernel drops many irq related errors...
I found the same problem with my new server motherboard. With irqpoll kernel option first everything seems good, but I miss the installation DVD, and booted the 32-bit edition.
The server installation was about three hours(!).
WIth 64-bit edition (and irqpoll option) the installation was about 5 minutes, and the system seems stable, but the kernel drops many irq related errors...