Just pasting noticeable error messages from the Maverick kernel exhibiting this issue.

[    3.730968] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    3.731020]   alloc irq_desc for 17 on node -1
[    3.731023]   alloc kstat_irqs on node -1
[    3.731031] ehci_hcd 0000:00:12.2: PCI INT B -> GSI 17 (level, low) -> IRQ 17
[    3.731053] ehci_hcd 0000:00:12.2: EHCI Host Controller
[    3.731088] ehci_hcd 0000:00:12.2: new USB bus registered, assigned bus number 1
[    3.731162] ehci_hcd 0000:00:12.2: applying AMD SB600/SB700 USB freeze workaround
[    3.731179] ehci_hcd 0000:00:12.2: debug port 15 IN USE
[    3.737945] ACPI: Battery Slot [BAT0] (battery present)
[    3.756064] ehci_hcd 0000:00:12.2: irq 17, io mem 0xd4004000
[    3.756077] ehci_hcd 0000:00:12.2: startup error -19
[    3.756086] ehci_hcd 0000:00:12.2: USB bus 1 deregistered
[    3.756188] ehci_hcd 0000:00:12.2: PCI INT B disabled
[    3.756191] ehci_hcd 0000:00:12.2: init 0000:00:12.2 fail, -19
[    3.756208]   alloc irq_desc for 20 on node -1
[    3.756210]   alloc kstat_irqs on node -1
[    3.756216] ehci_hcd 0000:00:13.2: PCI INT B -> GSI 20 (level, low) -> IRQ 20
[    3.756227] ehci_hcd 0000:00:13.2: EHCI Host Controller
[    3.756261] ehci_hcd 0000:00:13.2: new USB bus registered, assigned bus number 1
[    3.756285] ehci_hcd 0000:00:13.2: applying AMD SB600/SB700 USB freeze workaround
[    3.756302] ehci_hcd 0000:00:13.2: debug port 15 IN USE
[    3.780058] ehci_hcd 0000:00:13.2: irq 20, io mem 0xd4004100
[    3.780068] ehci_hcd 0000:00:13.2: startup error -19
[    3.780074] ehci_hcd 0000:00:13.2: USB bus 1 deregistered
[    3.780160] ehci_hcd 0000:00:13.2: PCI INT B disabled
[    3.780163] ehci_hcd 0000:00:13.2: init 0000:00:13.2 fail, -19
[    3.780183] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    3.780197]   alloc irq_desc for 16 on node -1
[    3.780199]   alloc kstat_irqs on node -1
[    3.780203] ohci_hcd 0000:00:12.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    3.780214] ohci_hcd 0000:00:12.0: OHCI Host Controller
[    3.780246] ohci_hcd 0000:00:12.0: new USB bus registered, assigned bus number 1
[    4.089965] isapnp: No Plug & Play device found
[   11.776048] ohci_hcd 0000:00:12.0: USB HC takeover failed!  (BIOS/SMM bug)
[   11.776052] ohci_hcd 0000:00:12.0: can't setup
[   11.776055] ohci_hcd 0000:00:12.0: USB bus 1 deregistered
[   11.776085] ohci_hcd 0000:00:12.0: PCI INT A disabled
[   11.776088] ohci_hcd 0000:00:12.0: init 0000:00:12.0 fail, -16
[   11.776092] ohci_hcd: probe of 0000:00:12.0 failed with error -16
[   11.776102] ohci_hcd 0000:00:12.1: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[   11.776113] ohci_hcd 0000:00:12.1: OHCI Host Controller
[   11.776144] ohci_hcd 0000:00:12.1: new USB bus registered, assigned bus number 1
[   19.776047] ohci_hcd 0000:00:12.1: USB HC takeover failed!  (BIOS/SMM bug)
[   19.776051] ohci_hcd 0000:00:12.1: can't setup
[   19.776053] ohci_hcd 0000:00:12.1: USB bus 1 deregistered
[   19.776082] ohci_hcd 0000:00:12.1: PCI INT A disabled
[   19.776085] ohci_hcd 0000:00:12.1: init 0000:00:12.1 fail, -16
[   19.776089] ohci_hcd: probe of 0000:00:12.1 failed with error -16
[   19.776099]   alloc irq_desc for 18 on node -1
[   19.776101]   alloc kstat_irqs on node -1
[   19.776106] ohci_hcd 0000:00:13.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
[   19.776116] ohci_hcd 0000:00:13.0: OHCI Host Controller
[   19.776147] ohci_hcd 0000:00:13.0: new USB bus registered, assigned bus number 1
[   27.776047] ohci_hcd 0000:00:13.0: USB HC takeover failed!  (BIOS/SMM bug)
[   27.776050] ohci_hcd 0000:00:13.0: can't setup
[   27.776053] ohci_hcd 0000:00:13.0: USB bus 1 deregistered
[   27.776082] ohci_hcd 0000:00:13.0: PCI INT A disabled
[   27.776085] ohci_hcd 0000:00:13.0: init 0000:00:13.0 fail, -16
[   27.776088] ohci_hcd: probe of 0000:00:13.0 failed with error -16
[   27.776098] ohci_hcd 0000:00:13.1: PCI INT A -> GSI 18 (level, low) -> IRQ 18
[   27.776108] ohci_hcd 0000:00:13.1: OHCI Host Controller
[   27.776138] ohci_hcd 0000:00:13.1: new USB bus registered, assigned bus number 1
[   35.776047] ohci_hcd 0000:00:13.1: USB HC takeover failed!  (BIOS/SMM bug)
[   35.776050] ohci_hcd 0000:00:13.1: can't setup
[   35.776053] ohci_hcd 0000:00:13.1: USB bus 1 deregistered
[   35.776082] ohci_hcd 0000:00:13.1: PCI INT A disabled
[   35.776085] ohci_hcd 0000:00:13.1: init 0000:00:13.1 fail, -16
[   35.776089] ohci_hcd: probe of 0000:00:13.1 failed with error -16