First time I got a glitch type problem. Help?

Yesterday I crashed on SL, which is nothing new. But when I logged back in there was this terrible glitch on my screen. Everytime I move my cursor around it makes the screen kind of flicker. It doesn't interfere with things I do on SL, but it is very annoying and distracting.

Here are two pictures I took to show you what it looks like. Sorry they aren't of best quality...

http://i35.tinypic.com/31341fn.jpg My cursor is above my name/title. When I move the cursor it's as if it 'drags' this black square behind it.

http://i34.tinypic.com/2h4x2rd.jpg This one shows the black type square being dragged along wherever I put the cursor...

Anyone ever come across this problem before? Is there a way to get rid of it?

It's going to ruin my SL experience if it stays this way...Please help. Any suggestions will be appreciated.

When you crashed yesterday was it just the client crashing like you suddenly found yourself at your desktop? Or SL just stopped responding? If it did maybe an uninstall and reinstall will fix it. After uninstalling do a search for anything relating to SL and manually delete the files (SL leaves some files behind in an uninstall). Get a fresh copy of SL for your reinstallation.

If that doesn't work then we need more information about your computer, operating system, SL client version, video card, RAM, etc.

Thanks, but I figured out what was wrong. It's the most stupid of reasons...Turns out I had zoomed in by 1% and that is why it had a glitch...I use mac so pressing certain keys could do that without realizing...