I have exactly the same problem as Teo, and the pci=nommconf fix works for me too. (Thanks!)
I'm running an up-to-date Dapper (as of June 22, 2006) on a custom-built desktop pc with an Intel 64bit Pentium 4 CPU. If I replace the 2.6.15-25 kernel with 2.6.15-10 the boot-time kernel panic goes away. All newer kernels listed by grub fail. Here's my hardware spec (partly in Norwegian--sorry, but should be understandable): * Intel Pentium 4 630 3.0GHz Socket LGA775, 2MB, EM64T, BOXED m/vifte * MSI 915PL NEO-F, I915PL, Socket-775 SATA, ATX, GbLAN, DDR400, Sound,PCI-Ex16 * Samsung SpinPoint P120S 250GB SATA2 8MB 7200RPM NCQ * XFX GeForce 6600 256MB Passive Cooling, PCI-Express, Tv-Out/DVI, Retail * Creative SB Audigy 2 Value, Bulk PCI Lydkort,7.1,Dolby Digital EX * NEC DVD-brenner ND-3550 IDE Black OEM DVD+R/+RW/DVD-R/-RW (Dual layer) * Sony Diskettstasjon 3,5" 1,44MB Sort Floppydisk Intern * TwinMOS PC3200 DDR-DIMM 1024MB Dual Pack Kit w/two matched PC3200 CL2.5 DDRs * Arctic Cooling Freezer 7 Pro CPU-Kjøler, Socket 775 * CNet Wireless G 54 Mbps Router/PCI kit, pakke med trådløs router og PCI-kort * CNet Wireless-G PCI 54 Mbps 802.11g, WPA/AES/WPA2, RP-SMA kontakt * In-Win C583 Midi Tower ATX Sort Kabinett m/350W Power, USB 2.0 -- kernel panic at boot, 64-bit version https://launchpad.net/bugs/39553 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs