Unstable network connection WinXP

The problem is with Relatek PCIe GBE Family Controler, which is network card.
We have used driver from MSI web sites and then we have replaced with newer
driver from Realtek web sites, but with both of them we have observed same
problem. After some time of running of network connection incoming packets
stops coming through network adapter. Outgoing packets are going alright. We
have observed there is no relationship between amount of packet received or
sent and malfunction. Sometimes it helps to disable and enable the network
adapter, but usually after few of this "restart" it stops working definitely.

For now we have driver version 5.754. Power management is switched off,
automatic deactivation disabled, jumbo frames disabled, WOL disabled, Green
Ethernet disabled, VLAN disabled, LSO disabled. The inteface is connected to
100Mbit switch port.

After installation of all drivers from MSI web sites, there still miss
driver for device with ID: ACPI\ENE0100\5&1E4EF203&0. But I think there is no
relationship between this mising driver and malfunction of ethernet.