server (almost) dies

[Luca Ferrari]

Hi all,
ubuntu server 6.1, sometimes it seems to die, that is it repond to pings, but 
no way to enter either via ssh or thru the console. In the log I found the 
following messages:

Aug  2 11:18:41 backup kernel: [43102179.570000]  <c0147e3c> 
softlockup_tick+0x9c/0xf0  <c012aff1> update_process_times+0x31/0x80
Aug  2 11:18:41 backup kernel: [43102179.570000]  <c02998f0> 
tcp_ioctl+0x0/0x180  <c0113cd5> smp_apic_timer_interrupt+0x55/0x60
Aug  2 11:18:41 backup kernel: [43102179.570000]  <c0103acc> 
apic_timer_interrupt+0x1c/0x24  <c02998f0> tcp_ioctl+0x0/0x180
Aug  2 11:18:41 backup kernel: [43102179.570000]  <c02998f3> 
tcp_ioctl+0x3/0x180  <d05c6a82> server_sock+0x32/0x70 [smbfs]
Aug  2 11:18:41 backup kernel: [43102179.570000]  <c02b4c7a> 
inet_ioctl+0x3a/0xb0  <d05c7062> smb_recv_available+0x32/0x50 [smbfs]
Aug  2 11:18:41 backup kernel: [43102179.570000]  <d05c8fe7> 
smbiod+0x1a7/0x220 [smbfs]  <c0135020> autoremove_wake_function+0x0/0x50
Aug  2 11:18:41 backup kernel: [43102179.570000]  <d05c8e40> smbiod+0x0/0x220 
[smbfs]  <c0101005> kernel_thread_helper+0x5/0x10


Is this related to the problem? Any idea about?

Thanks,
Luca