So many problems with photoshop CS5.1. Here is the things that annoy me about it:

CTRL+Z doesn’t undo more that one step.
CTR+Mouse Scroll doesn’t zoom.
Clicking on a different layer in the image doesn’t select that layer.
Selecting text is impossible.
Things are displayed off the screen on a netbook PC.
Takes forever to install, load and takes up hundreds of megabytes of HDD space.

I gave up with photoshop and its annoying problems. I just had enough of it. So I changed to GIMP.

GIMP – GNU IMAGE MANIPULATION PROGRAM – https://www.gimp.org/

The best things about GIMP:

It’s Free & Open Source Software
It opens Photoshop Files & also saves in Photoshop format
It fixes all of Photoshops annoying problems listed above and yeah it’s free!