I've been googling/reading lots of information, found similar problems, then discovered kernel OOPS with intel_ips module:

   1.
      [    5.985278] Pid: 408, comm: modprobe Not tainted 2.6.35-22-generic #35-Ubuntu K52F/K52F
   2.
      [    5.985370] EIP: 0060:[<f81da452>] EFLAGS: 00010286 CPU: 1
   3.
      [    5.985433] EIP is at ips_detect_cpu+0x62/0x180 [intel_ips]
   4.
      [    5.985498] EAX: 00c800c8 EBX: 00000000 ECX: 00c800c8 EDX: 00000000
   5.
      [    5.985562] ESI: f5bbfe04 EDI: f69ae500 EBP: f5bbfe14 ESP: f5bbfde4
   6.
      [    5.985626]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
   7.
      [    5.985688] Process modprobe (pid: 408, ti=f5bbe000 task=f5ac7230 task.ti=f5bbe000)
   8.
      [    5.985778] Stack:
   9.
      [    5.986569]  f81dbefc f81dbe9e f70b6c00 f5bbfe14 c020c441 f5bbfe08 c05c79e9 f81daeef
  10.
      [    5.986810] <0> 00000000 f69ae500 f7168000 fffffff4 f5bbfe4c f81daf2a c027165d f5bbfe4c
  11.
      [    5.987123] <0> c0270c07 f5bbfe4c c027100a f5bbfe38 f7168000 f7168060 c036bb3e f7168000
  12.
      [    5.987485] Call Trace:
  13.
      [    5.987548]  [<c020c441>] ? kmem_cache_alloc_notrace+0x91/0xb0
  14.
      [    5.987617]  [<c05c79e9>] ? mutex_lock+0x19/0x40
  15.
      [    5.987677]  [<f81daeef>] ? ips_probe+0x1f/0x690 [intel_ips]
  16.
      [    5.987744]  [<f81daf2a>] ? ips_probe+0x5a/0x690 [intel_ips]
  17.
      [    5.987809]  [<c027165d>] ? sysfs_add_one+0x1d/0x110
  18.
      [    5.987872]  [<c0270c07>] ? sysfs_new_dirent+0x67/0x100
  19.
      [    5.987934]  [<c027100a>] ? sysfs_addrm_finish+0x1a/0xb0
  20.
      [    5.988001]  [<c036bb3e>] ? pci_match_device+0xbe/0xd0
  21.
      [    5.988062]  [<c036b9d3>] ? local_pci_probe+0x13/0x20
  22.
      [    5.988125]  [<c036c988>] ? pci_device_probe+0x68/0x90
  23.
      [    5.988188]  [<c0400540>] ? really_probe+0x50/0x150
  24.
      [    5.988253]  [<c0407bb7>] ? pm_runtime_barrier+0x57/0xb0
  25.
      [    5.988316]  [<c040067c>] ? driver_probe_device+0x3c/0x60
  26.
      [    5.988379]  [<c0400721>] ? __driver_attach+0x81/0x90
  27.
      [    5.988441]  [<c03ffb43>] ? bus_for_each_dev+0x53/0x80
  28.
      [    5.988504]  [<c040040e>] ? driver_attach+0x1e/0x20
  29.
      [    5.988565]  [<c04006a0>] ? __driver_attach+0x0/0x90
  30.
      [    5.988625]  [<c03ffdd5>] ? bus_add_driver+0xd5/0x280
  31.
      [    5.988686]  [<c036c8c0>] ? pci_device_remove+0x0/0x40
  32.
      [    5.988751]  [<c0400a1a>] ? driver_register+0x6a/0x130
  33.
      [    5.988812]  [<c036cbc5>] ? __pci_register_driver+0x45/0xb0
  34.
      [    5.988878]  [<f81df017>] ? ips_init+0x17/0x19 [intel_ips]
  35.
      [    5.988942]  [<c0101132>] ? do_one_initcall+0x32/0x1a0
  36.
      [    5.989006]  [<f81df000>] ? ips_init+0x0/0x19 [intel_ips]
  37.
      [    5.989074]  [<c0180c2b>] ? sys_init_module+0x9b/0x1e0
  38.
      [    5.989140]  [<c0218fa2>] ? sys_write+0x42/0x70
  39.
      [    5.989201]  [<c05c9114>] ? syscall_call+0x7/0xb
  40.
      [    5.989262] Code: 1e f5 c7 90 ba f5 bd 1d f8 b8 0c 52 81 c0 e8 a6 f6 17 c8 bb 80 c4 1d f8 85 c0 74 35 b8 ac 01 00 00 89 f2 e8 b1 1e f5 c7 90 89 c1 <8b> 53 08 c1 e1 12 c1 e
  41.
      9 15 69 c1 e8 03 00 00 39 c2 75 75 89 d8
  42.
      [    5.991035] EIP: [<f81da452>] ips_detect_cpu+0x62/0x180 [intel_ips] SS:ESP 0068:f5bbfde4
  43.
      [    5.991180] CR2: 0000000000000008
  44.
      [    5.991307] ---[ end trace 4126c52517df4ed9 ]---


Then i added blacklist intel_ips to the local modprobe config and problem has been solved.
Actually, it's a workaround rather then solution.

Shall i post here harware info, logs, etc?