files found after erase

[albert]

I am running vista and, after running the eraser program for unused disc space(3 passes, including cluster tips), I run VirtualLab Client recovery program. I am finding many files in the raw data that can be recovered. Should not these have been erased?

 

[albert]

a further note. even after running the program each night , imgaes from my internet browsing are showing up a week later, (though they hadn't in previous restoration attempts)