No idea what that error means but making a guess, could it be you are not using network drivers certified for that specific hardware and OS? I think someone once mentioned on this list that un-certified drivers could cause issues with windows 2003 server...

On Fri, Nov 27, 2009 at 6:25 PM, wambugu esther <essiekui@gmail.com> wrote:
There are errors of NIC Agents:Connectivity has been lost for the NIC
in slot 0 port 1.

On Fri, Nov 27, 2009 at 6:12 PM, Peter Karunyu <pkarunyu@gmail.com> wrote:
> Is the instability following any sort of pattern? E.g. a certain time or
> when someone is using some particular feature of sybase? Does the event
> viewer have anything out of the norm?
>
>
> On Fri, Nov 27, 2009 at 6:08 PM, wambugu esther <essiekui@gmail.com> wrote:
>>
>> yes,
>> im running on windows server 2003 enterprise version 64 bit..
>>
>> On Fri, Nov 27, 2009 at 6:06 PM, Peter Karunyu <pkarunyu@gmail.com> wrote:
>> > I am not a server expert but having had to babysit a DL 360, the first
>> > culprit I would target would be the operating system, especially if its
>> > windows server 2003.
>> >
>> > On Fri, Nov 27, 2009 at 4:30 PM, wambugu esther <essiekui@gmail.com>
>> > wrote:
>> >>
>> >>  Hi guys,
>> >>   i have a problem with a server where the server performance is
>> >>   unstable,one time it is good and the other time is completely slow
>> >>   causing the sybase server running on the machine to be slow too.
>> >>   On the hardware side we checked the RAM and the part numbers
>> >>   were:398707-051..im not an expert in hardware but can someone confirm
>> >>   to me whether this part number is certified for HP SERVER DL 580.Or
>> >>   what else could cause a new HP server to be so unstable in speed
>> >>   your response will be highly appreciated
>> >>
>> >> - Done.
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