Wierd multiple draggy effect thingy when testing

I have this strange problem when I'm testing my map off hammer.

the map starts and I move around the map and all the area around my crosshair stays where it is and makes multiple pictures of everything a few frames apart. It's really wierd and thats the best I know how to explain it. please help

it is most likely that your files are a little mest up or it may be a little fixable problem i guess

That sounds like you're looking at the void on your map, you need to make sure the interior is completely sealed off from the black nothingness around the map.

oh ty i put in a skybox and that helped ty very much

http://developer.valvesoftware.com/wiki/Leak

This is a VERY important page to read if you're just starting out making a map.

Afterwards, check out here: http://developer.valvesoftware.com/wiki/Category:Level_Design and here: http://forums.tf2maps.net/showthread.php?t=807