Lost Delayed - Write Data error. event ID 50, source Ft disk

Hi,

    I am running windows 2000 service pack 4.0 on dell powerege 2600 server. It is configured on raid 5. It is also running MSSQL database. We have started getting following error, which keeps on coming every 20 -25 days.

Following is the error i have found from eventlog.

Event Type: warning

Event Source: Ftdisk

event ID: 50

Date:

Time:

User: N/A

Computer:

Description:

{Lost Delayed-Write Data} The system was attempting to transfer file data from buffers to \Device\HarddiskVolume4. The write operation failed, and only some of the data may have been written to the file.

Then when i reboot machine, this error disappears and everthin work fine for another 20 days. It seems that something is dynamically growing and getting flushed after every reboot.

couple of months back we have installed .net on this. and after installing .net we have started getting this problem.

I spoke to dell technician,but they are not having any clue and they forwarded me microsoft link and told me it's microsoft memory manangement issue. On microsoft knowledge base i have read this issue is been taken care by windows 2000 service pack 2.0.

can anybody help me what could be the cause of this error. Is this .net which might have corrupted service pack 4 or it's something with hardware issue. Any help or suggestion would be appreciated.

Thanks in advance

Hemal