I have just completed a run using Avast Bart CD and the mydoom virus was found. However the anti virus product was only able to delete some of the files associated with it. The others were labeled as "unable to delete, access denied NR(5)". Any ideas about this? It seems to me a standalone version shouldn't get file access errors such as this. Has anyone else run acrosss this and is there a solution using the Bart product without having to download symantecs removal tools?