Since a few weeks ago, after starting my PC and start to work i got this message below:

"Sep 5 09:04:56 localhost kernel: Badness in interruptible_sleep_on_timeout at kernel/sched.c:2988
Sep 5 09:04:56 localhost kernel: [<c0300047>] interruptible_sleep_on_timeout+0x5d/0x1da
Sep 5 09:04:56 localhost kernel: [<c011b9ea>] default_wake_function+0x0/0xc
Sep 5 09:04:56 localhost kernel: [<c0121219>] reparent_to_init+0x123/0x127
Sep 5 09:04:56 localhost kernel: [<c0121396>] allow_signal+0xfe/0x198
Sep 5 09:04:56 localhost kernel: [<d8889e3e>] rtl8139_thread+0x38/0x13f [8139too]
Sep 5 09:04:56 localhost kernel: [<d8889e06>] rtl8139_thread+0x0/0x13f [8139too]
Sep 5 09:04:56 localhost kernel: [<c01041d9>] kernel_thread_helper+0x5/0xb
Sep 5 09:04:56 localhost kernel: ACPI: PCI interrupt 0000:00:1f.5[B] -> GSI 10 (level, low) -> IRQ 10"

What is my mistake??
Did i changed anything?

Can you help me !!!
thanks

8139 refers to the realtek network card that your using. very common card.

the fact that you've got ACPI errors in there as well might suggest that its got something to do with 'wake-on-lan' (backed up by default_wake_function)

this is just purely a guess by the way. i don't know what you've changed. try disabling wake on lan in your bios...

when do you get this error message? during boot or later on once you've actually booted up?

hope that sheds some light on your problem

thanks for your reply by the way.

I 've got this problem once i booted up. In fact after working with my PC for a while and sometimes i got this problem when i let my PC "switched on" without touching it for a while.

Thanks pats
I appreciate your help .

I will go to the bios and disable as you said "wake on lan", i don't know what's the meaning of it but i'll search for it and disable it.
appreciate once again.