Windows SBS 2003 runs extremely slowly

I have a SBS 2003 Server with 8 clients, 1.25gb of RAM which is running extremely slowly although task manager reports that less than 5% of cpu is being used.  Any suggestions as to what may be causing this?  I can heard the hard disk (36gb) grinding along almost continously.  Any suggestions?  Thanks
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check your disk space Free on the C:\ drive.... do you have at least 500MB's free?
Jeffrey Kane - TechSoEasyPrincipal ConsultantCommented:
Is there only ONE partition on the hard drive?  Only ONE 36GB drive?  

What CPU does the server have?  

When was the last time you defragmented your hard drive?


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