Is your graphics card up to date?
First of all some software is very sensitive to how updated your graphics card drivers are, and I know first hand that Second Life can be a bugger with this, so what we're going to do is highlight what your graphics card is, and how updated it is.
If you are running Second Life on a windows operating system (Windows XP, ME, Vista or 7), press the windows key on your keyboard plus "r", and you will see a small command box pop up. This new box is called the "Run..." window which allows you to type in a command and it will run it.
You need to type in "dxdiag", and then if you click "Ok", you will see the run box disappear and a small pop up asking you if you want to digitally assign drivers. Click yes at this point. Once you have clicked yes, you will see the Dxdiag window appear with more details. For this article, we will be looking at the tab called "Display" or if you have two monitors/graphics cards it will be named "Display 1".
If you have clicked on the tab, you will see a few bits of information. The information that you need is as follows...
Device section -
Name: This is your graphics card name.
Manufacturer: This is the creator of your graphics card.
Drivers -
Date: This is the last time your graphics card drivers were updated. If this is longer than 4 months ago, I'd advise looking at updating these drivers.
To update your drivers, locate the manufacturers website, and then you will see the option on their website to update your drivers.
Good website links:
http://www.nvidia.com
http://www.amd.com
http://downloadcenter.intel.com
Rock on peeps.