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Why Linux can crash when connected to internet?



My GNU/Linux Pentium machine with Debian Hamm (and some packages from
Slink) crashes completely at random intervals (from 5 minutes to 1
hour), and preferably in the morning. But only when I am connected to
internet 
When I unplug the ethernet cable from the netcard I can be working for
endless hours (which, on the other hand, is not quite healthy).

I have been read something about a "teardrop" that can crash kernels
below version 2.0.idontremember. Nevertheless I have kernel 2.0.35 and
teardrop does not affect it. Nevertheless, do you know if there is a
newer version of the teardrop procedure (I don' know whether it is a
program or a bug in the kernel) that could crash my system ?

If it is not a teardrop, then what could it be? What can I do to avoid
crashes?

BTW: It also crashes Win3.1, but I am not worried about it (anything can
crash windows).

BTW2: The crash consists on: "You are working or whatever, and then
suddenly
everything freezes: the xosview, the clock, and even the mouse cursor.
The keyboard is also dead: Ctrl+Alt+Fn, Alt+Tab, Ctrl+Alt+`+', ... don't
work. I have to reset the computer and cross fingers to be the last
crash of the day" As you can see, it is very similar to a crash by the
Intel Pentium F0 0F bug, but the kernel can workaround it.

Any ideas? Any help?

-- 
Conrado Badenas (Assistant Lecturer)
Department of Thermodynamics. University of Valencia
c/. Doctor Moliner, 50       | e-m: Conrado.Badenas@uv.es
46100 Burjassot (Valencia)   | Phn: +34-63864350
SPAIN                        | Fax: +34-63983385


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