I have the same probleme. it begin 2 weeks ago on ubuntu 10.04 and after update to 10.10.

part of boot log file :
Oct 20 21:11:17 nous-laptop acpid: 1 client rule loaded
Oct 20 21:11:17 nous-laptop gdm-binary[1533]: WARNING: GdmDisplay: display lasted 0,050860 seconds
Oct 20 21:11:17 nous-laptop gdm-binary[1533]: WARNING: GdmLocalDisplayFactory: maximum number of X display failures reached: check X server log for errors
Oct 20 21:12:08 nous-laptop kernel: [  240.328109] INFO: task modprobe:624 blocked for more than 120 seconds.
Oct 20 21:12:08 nous-laptop kernel: [  240.328190] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct 20 21:12:08 nous-laptop kernel: [  240.328268] modprobe      D f1e5bdf8     0   624      1 0x00000008
Oct 20 21:12:08 nous-laptop kernel: [  240.328281]  f1e5be08 00000086 00000002 f1e5bdf8 f26b6000 00000000 c0907480 c0907480
Oct 20 21:12:08 nous-laptop kernel: [  240.328300]  7f8a33b0 00000002 c0907480 c0907480 00000001 00000002 f26bc400 c0907480
Oct 20 21:12:08 nous-laptop kernel: [  240.328318]  c0907480 f2779960 00000001 c081c678 c081c67c ffffffff f1e5be34 c05eeac6
Oct 20 21:12:08 nous-laptop kernel: [  240.328337] Call Trace:
Oct 20 21:12:08 nous-laptop kernel: [  240.328357]  [<c05eeac6>] __mutex_lock_slowpath+0xd6/0x140
Oct 20 21:12:08 nous-laptop kernel: [  240.328371]  [<c05ee9d5>] mutex_lock+0x25/0x40
Oct 20 21:12:08 nous-laptop kernel: [  240.328381]  [<c0414eae>] __driver_attach+0x4e/0x90
Oct 20 21:12:08 nous-laptop kernel: [  240.328392]  [<c0414303>] bus_for_each_dev+0x53/0x80
Oct 20 21:12:08 nous-laptop kernel: [  240.328400]  [<c0414bce>] driver_attach+0x1e/0x20
Oct 20 21:12:08 nous-laptop kernel: [  240.328409]  [<c0414e60>] ? __driver_attach+0x0/0x90
Oct 20 21:12:08 nous-laptop kernel: [  240.328418]  [<c0414595>] bus_add_driver+0xd5/0x280
Oct 20 21:12:08 nous-laptop kernel: [  240.328430]  [<c03d3030>] ? pnp_device_remove+0x0/0x40
Oct 20 21:12:08 nous-laptop kernel: [  240.328438]  [<c04151da>] driver_register+0x6a/0x130
Oct 20 21:12:08 nous-laptop kernel: [  240.328448]  [<c03d2fec>] pnp_register_driver+0x1c/0x20
Oct 20 21:12:08 nous-laptop kernel: [  240.328462]  [<f940a514>] nsc_ircc_init+0x50/0x295 [nsc_ircc]
Oct 20 21:12:08 nous-laptop kernel: [  240.328473]  [<c01c28de>] ? ftrace_now+0x2e/0x50
Oct 20 21:12:08 nous-laptop kernel: [  240.328484]  [<c01bba93>] ? ftrace_update_code+0xc3/0x130
Oct 20 21:12:08 nous-laptop kernel: [  240.328496]  [<f9403003>] ? nsc_ircc_init_338+0x3/0x10 [nsc_ircc]
Oct 20 21:12:08 nous-laptop kernel: [  240.328507]  [<c01b8967>] ? tracepoint_module_notify+0x27/0x30
Oct 20 21:12:08 nous-laptop kernel: [  240.328517]  [<c05f3843>] ? notifier_call_chain+0x43/0x60
Oct 20 21:12:08 nous-laptop kernel: [  240.328528]  [<c0103042>] do_one_initcall+0x32/0x1a0
Oct 20 21:12:08 nous-laptop kernel: [  240.328540]  [<f940a4c4>] ? nsc_ircc_init+0x0/0x295 [nsc_ircc]
Oct 20 21:12:08 nous-laptop kernel: [  240.328551]  [<c0188f1b>] sys_init_module+0x9b/0x1e0
Oct 20 21:12:08 nous-laptop kernel: [  240.328562]  [<c0222ec2>] ? sys_write+0x42/0x70
Oct 20 21:12:08 nous-laptop kernel: [  240.328572]  [<c010939f>] sysenter_do_call+0x12/0x28
Oct 20 21:12:22 nous-laptop kernel: [  254.752075] tpm_tis 00:0a: tpm_transmit: tpm_send: error 4294967234
Oct 20 21:14:08 nous-laptop kernel: [  360.328106] INFO: task modprobe:624 blocked for more than 120 seconds.