Are performance issues similar to a desktop PC's? Examples:
Hsaving too many apps open slow down the BB?
Installing and removing apps potentially corrupt OS?
Storage gets fragmented?

How do I view which apps are open (like Task Manager)?
Are there any utilities available to "clean/speed up/defragment the BB?

Thanks again!
Jamie

Depending on the device you have to see what's running in the background, either press and hold the menu/BlackBerry key, or ALT+menu/BB key.

Having too many apps running will definitely slow down your device's performance and eat up battery.

There might be 3rd party apps to clean your BB but easiest way is to just delete an app that you don't need anymore.

Free up memory on the device, from the FAQ: How do I free up memory on my device? - BlackBerryFAQ

Might also try the SEARCH feature.

Thanks for the replies.
When I use the Application Switcher to view the apps that are open, there seem to be some apps that can't be closed. Some probably arn't reallt apps, but features of the phone. Here's what the Switcher shows that I can't close; Browser, Phone, Home, Messages, and Blackberry Messenger. I thought I should be able to close the Browser and BB Messenger at least.

Thanks,
Jamie

Nope those are the 5 thats always show.
Browser is closed, even in app switcher, as long as you do NOT leave it on a an active page.
i.e. always menu - close out of the browser.