I think 2.6.25 is hanging on the probe of ide port1.
This is 2.6.24
AMD5536: IDE controller (0x1022:0x209a rev 0x01) at PCI slot 0000:00:0f.2 AMD5536: not 100% native mode: will probe irqs later AMD5536: 0000:00:0f.2 (rev 01) UDMA100 controller ide0: BM-DMA at 0x1ca0-0x1ca7, BIOS settings: hda:pio, hdb:pio AMD5536: IDE port disabled hda: CF 1GB, ATA DISK drive hda: MWDMA2 mode selected ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 hda: max request size: 128KiB hda: 2030112 sectors (1039 MB) w/1KiB Cache, CHS=2014/16/63 hda: hda1
and 2.6.25
AMD5536: 0000:00:0f.2 (rev 01) UDMA100 controller AMD5536: IDE controller (0x1022:0x209a rev 0x01) at PCI slot 0000:00:0f.2 AMD5536: not 100% native mode: will probe irqs later AMD5536: IDE port disabled ide0: BM-DMA at 0x1ca0-0x1ca7, BIOS settings: hda:PIO, hdb:PIO
and on one boot it did this: Probing IDE interface ide1...
I think it's going after ide1, even though it is not there. Not sure yet. Something is pretty wrong here, and it broke from 2.6.24 to 2.6.25.
ron