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Prefetch file and .exe

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by adelasierra

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What purpose does c:\windows\prefetch serve. Can deleting it's contents cause any problems?, also what is MmjbUpdt.exe? It starts to run when I open musicmatch juke box and it pushes the cpu to the limit. I'm still working on my overdriven cpu problem and have done everything except increase virtual memory space and eliminate the above mentioned prefetch file. Thanks Angelljr 8200 dell 1.9 g 256 meg ddr ram

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by diamondwind

Windows XP's prefetch feature is a newly added feature which supposedly improves system performance. However, after a period of time, just like the registry, obsolete entries begin to build up. You can safely clear these invalid files and regain system performance by doing the following.

1. Navigate to C:\Windows\Prefetch folder.

2. Delete all files with a *.pf extension.

3. Reboot the system.

As far as the mmjbupdt.exe file goes, judging by the file name I would suspect it is anautomatic updater. Hence the name being short for MusicMatchJukeBoxUPDaTe.exe. That is just a guess as to its real meaning however. I hope this helps.

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