Burning at Half Speed

Here’s a rather odd problem for you guys. I am using a LG GCE8320B burner and Clone CD 4. When I try to burn images from discs (MoH:AA and Warcraft III), burner only burns at hald speed. I tell CLone CD to burn at 8x, but it only burns at 4x. It makes no difference which profile for Clone CD I use to try to burn. Alos, the burned images are not working CD, but when I use Daemon Tools (with no emulation), the images on my hard drive play fine. Is there a problem with my burner?