Disabling multicore support does not solve my problem. I've changed it
yesterday and it worked w/o freeze. Today after wakeup from hibernation,
I got a freeze while logging in.

@Chem.Imbalance: I'm happy for you but I don't see an IRQ conflict on my side
[code]>cat /proc/interrupts 
           CPU0       
  0:     630296   IO-APIC-edge      timer
  1:        468   IO-APIC-edge      i8042
  8:          1   IO-APIC-edge      rtc0
  9:          1   IO-APIC-fasteoi   acpi
 12:       2125   IO-APIC-edge      i8042
 14:       4517   IO-APIC-edge      ata_piix
 15:          0   IO-APIC-edge      ata_piix
 16:       1238   IO-APIC-fasteoi   nvidia
 17:       1294   IO-APIC-fasteoi   nvidia
 18:          0   IO-APIC-fasteoi   mmc0
 19:          2   IO-APIC-fasteoi   ohci1394
 20:         20   IO-APIC-fasteoi   ehci_hcd:usb2, uhci_hcd:usb3, uhci_hcd:usb5
 21:      50303   IO-APIC-fasteoi   uhci_hcd:usb4, uhci_hcd:usb6, HDA Intel
 22:          2   IO-APIC-fasteoi   ehci_hcd:usb1, uhci_hcd:usb7
2296:          4   PCI-MSI-edge      eth0
2297:      26213   PCI-MSI-edge      iwlagn
2298:      81562   PCI-MSI-edge      ahci
NMI:          0   Non-maskable interrupts
LOC:     330170   Local timer interrupts
RES:          0   Rescheduling interrupts
CAL:          0   Function call interrupts
TLB:          0   TLB shootdowns
SPU:          0   Spurious interrupts
ERR:          0
MIS:          0
>lsusb
Bus 002 Device 003: ID 05a9:2640 OmniVision Technologies, Inc. 
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 002: ID 046d:c018 Logitech, Inc. Optical Wheel Mouse
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 002: ID 046d:c251 Logitech, Inc. 
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub[/code]

I did not yet a kernel upgrade:
Linux clawfinger 2.6.28-13-generic #45-Ubuntu SMP Tue Jun 30 22:12:12 UTC 2009 
x86_64 GNU/Linux

Btw. I never had freezes with 32bit version of Ubuntu Jaunty (used since
alpha 4).


** Attachment added: "lspci @lasombra"
   http://launchpadlibrarian.net/29157750/lspci.txt

-- 
Clocksource tsc unstable leads to lockups in Ubuntu Jaunty
https://bugs.launchpad.net/bugs/355155
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