XP System Utility

Hey, All!  :)

Was glad to see some activity on this list!  Now, I am hoping you can give 
me your best advice on my next software purchase.

I have an XP Pro Work Station.  Have had it about a year and no lock-ups 
until recently.  I figure the 10 hour days and my mega-multitasking has 
finally caught up with me.  I have been looking at utilities that 
supposedly manage resources, files and registry entries that are so 
infamous for plaguing Windows performance and have no idea which is best at 
doing what it says.

So, I come to you.  Are any of you using an XP system maintenance utility 
and if so what do you recommend based on your personal use and 
experience?  I just want to be sure that what I purchase is actually going 
to do what it says and effectively keep this workbox in its place.  ;-)

Thank you in advance for your suggestions!
/j

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