Symantec Enterprise 9 and W2K Server SP4

I have recently uninstalled McAfee Enterprise 8 from my Windows 2000 Server with SP4. I then installed SAV CE 9 but soon after installing this, I begin have client computers that would lose connection to shares on the server as well as print services. I uninstalled SAV and let the server run without it…no issues. Put it back on the server and the issues came back. I have a Proliant DL380 G2. I have update the latest drivers from the support pack. I was getting a Event ID error 2022 so I edited the registry to increase the connections avaialbe. This seemed to resolve the for a few hours but it has returned but I’m not getting the 2022 ID anymore. Any help you could provide would be appreciate. I have spoken with Symantec about 5 times and HP 3 with no resolution.