Swap going 100 mile an hour virtually freezing PC

[newcr]

Hi all
Just wondering if anyone can tell me what is going on ....

Swap going 100 mile an hour virtually freezing PC. It has been happening 
the last 3 days. It is not specific to an application or whether I am 
off-line or on-line (dial-up). I thought it was OpenOffice for a while 
as it coincided with usage; However, today I was using Thunderbird and 
Firefox and same thing happened. While it does not completely freeze it 
virtually comes to a stand-still while something is going on with the 
hard-drive. Is there a problem or is it doing something like a defrag. 
Can I get control back of my PC. I have tried looking at logs to see 
what it is (/var/log) but haven't found the right log (or don't know 
what I am looking at).

Recently installed 7.04 (About 3 weeks ago).

Any help appreciated

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