fool proof apps for storm 2

I've noticed that my storm 2 hangs up a lot more than it did when I initially got it. My guess is that its probably because of the apps I have on it so I am doing a secure wipe with removal of all apps. I had the following apps on ym storm 2- is any of them known to cause an issue?

Berry weather
Quick launch
Bb Twitter and Facebook
Shazaam
Berry alert
One battery info app that I forgot the name!

I think that was it

So you're saying your phone is kinda slow??

What OS are you running?

I have the latest official drm version for the 9520.

Basically, I find the screen "locks" a lot of times- even when I'm getting a call so preventing me from answering a call. Or other times trying to navigate to a menu options