>I have recently installed Roxio Easy Media Creator 9 but I
>have removed it just in case.

I suspect your problem was caused by the Roxio uninstall. You can read about a possible solution here: MSKB #314060. Although the MSKB article may not deal exactly with your problem, it would be worthwhile to check out the solution. I went through this quite a number of years ago when I uninstalled Roxio and this solution worked for me.

Jeff
simul iustus et peccator