1. Hard Drives plunk down the data chunks wherever they can, which causes fargmentation. The windows disk defragmenter put the chunks back in line to make your pragrams start faster.
2. Some LCD don't "refresh" fast enough, hence streaking. However, your CRT should not be doing that, and there might be something wrong with it or some settings are not correct
\".......die screaming with sharp things in your head\"
Proud Bush supporter.