I have a droid 2

I've had this "smart" phone for a long time with no major problems except for the atrocious touch screen. But recently two problems have arisen.

When I go online it will randomly crash to the desktop and when I go back to the browser it just goes to the google homepage and forgets what I was doing. What should I do to solve this annoying problem?

Also, I have always used the leaves on water live wallpaper but now it will randomly reset to the crappy 0101 default wallpaper. What's the deal there?

I have no clue what happened to my phone and why it's acting so retarded.