My Expierence With Emulator of Android Development Tools 11

Yesterday I installed the latest version (currently - 11th) of Android Development Tools into my ASUS X53Ka (AMD Athlon X2 64 TK-57 1.9 GHz, 4 GB of RAM). But the emulator loads very slowly - I've waited for about 5 minutes but the emulator haven't started (the title "Android..." was still blinking).

So, what I did? I pressed on Window->Android SDK and AVD Manager and changed some options a bit:

ActivityNotFoundException on Android?

I am creating a small Android client for my Master's theses. Unfortunately, I've encountered a problem: I get ActivityNotFoundException during runtime process. I just need to change the activity of my program (to show the help box). Maybe someone could give me a hint what I'm doing wrong?

My main file/activity looks like that:

package info.ernestas.uvrsclient;