>   The problem is, that SCC driver still freezes the system. When this
> happens, it is not possible to do anything, only cold reset.

Are you using the KISS TNC emulation (kissattach on /dev/scc#) or
network devices (set up with ifconfig scc#)? Could you try the
network device mode if you are currently using the KISS TNC 
emulation?
 
>  Second PC connected to the same ethernet segment receives sometimes
> bogus size packets after gateway crash.

Oops, are you sure that you do not have any Interrupt or I/O-Port
collisions?

>  I also noticed, that there are many RX errors on device SCC0, 

This is normal.

> Does anyone have similar problem ?  Or is there any possibility how to
> fix it?

Complete freezes are AFAIK quite rare, my own problems went away after I
cleaned the contacts of the RAM modules and applied some contact spray
to the ISA slots... Everything's extremely stable ever since.

73,

Joerg Reuter                                 http://poboxes.com/jreuter/
And I make my way to where the warm scent of soil fills the evening air. 
Everything is waiting quietly out there....                 (Anne Clark)

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