Connections lost

New Windows 2003 Small Business Server
New switch installed (problem existed before this change)
20 Windows 98SE clients and 2 XP clients.

Users loose connection to the server. Open a file , work on it and then cannot save it.
Sometimes cannot print after printing most of the day.
Seems that when these problem manifast then Internet connectivity also lost.

Outlook 2000 takes about 90 seconds to send a new mail to Exchange. Don't know if these are related.

Would like to reach a stable working environment. System was set up by MS Gold partner MCSE's.

Any help appreciated.

Alex AngusDirectorAsked:
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what NIC cards are in the client computers installed? Realteks have problems with autonegotiation with a lot of switches.
any more info about the hardware appreciated :)
Alex AngusDirectorAuthor Commented:
The server is Intel Valcano Peak 7320VP2 motherboard with Dual 3G Xeon, 2Gb memory, 160Gb SATA Raid 1.

The desktops are mostly old Intel 810 and 815 boards with Celeron and 64Mb with Windows 98SE.
The two new XP systems have 256M and P4 2.2GHz and 2.%Ghz.

The switch is new Netgear 24 port 10/100/1000Mb/s unmanaged.
One 1Gb NIC to network and seperate 100M NIC to ADSL router.

The old server is loaded with Windows 2003 Server only and runs accounts package only. No problems from it.

Server is running Exchange and ISA and Active Directory. Server seems to be idling along with not much load. CPU usage average around 2%. I see a program called store.exe takes 567Mb but I believe this is ok. W3Proxy takes 316M and 305M in two processes.

I hope that is everything you need.

Thought of taking a spare 64 or 128M memory to try on a desktop.

It just does not seem correct to take 90 sec to send a mail when all other users have gone home.

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Alex AngusDirectorAuthor Commented:
Sorry, forgot to mention that we run Trend Neatsuite with server protect and Officescan on client. They were running this exact version with the old NT4 server before upgrading.
Alex AngusDirectorAuthor Commented:
There are two Intel 1Gb NIC's as part of the motherboard. Only one is currently used to the switch. I have a third SMC NIC for the ADSL router only.

They had a 100Mb Intel Hub in place before but we quickly replaced that because when you copied any file accross the network, everybody was disconnected. Since upgrading to the Netgear Gb switch, that has not repeated itself.

I tried changing the NIC from 1000Mb to 100Mb to the switch, but that did not seem to change things. At some stage I wanted to enable load sharing of the two 1Gb NICS to the Switch but do not know how to do that yet. Just trying to get the basics working.

It is now 1pm local time and so far today no complaints about not being able to save. They still have the slow Outlook message send and file browsing takes a long time to read the network.
Alex AngusDirectorAuthor Commented:
Problem was the contacts folder in outlook 2000. Removed the Outlook folder from Outlook services and put it back again. Seems to have solved the problem.
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