My acer aspire 7520, running vista tak...

You are dealing with the main complaint about Vista....it's slow, but a lot can be done to move it along. One thing that would help would be to download a reputable register cleaner. Here is a comparison table:

http://www.best-registry-cleaners.net/?gclid=CLS9qq7HuZsCFQZinAodSBR2Aw#C

Unfortunately, the top one costs $30. A second thing you should do is download SPYBOT S&D. Download it from a reputable place: DOWNLOAD.COM. It is a spyware cleaner. Run it and have it take any spyware off your machine.

The third thing you can do is take a look at these suggestions that apply to a lenovo, but should apply to just about any notebook:

http://www-307.ibm.com/pc/support/site.wss/document.do?sitestyle=lenovo&lndocid=MIGR-68156

It is a pretty comprehensive list of things you can do. My guess is that your machine came with a bunch of software preinstalled that you do not use.

The 4th thing I would do (and I would do this first) is UNINSTALL every piece of software you have on the machine that you do not use and do not plan to use. Go to start, control program, programs and features, and uninstall one at a time.

Somewhere in this series, you are going to get much better performance...I guarantee it.