I don't think Revo has messed around with my stick, it uses the program's own uninstaller and then does a scan and reveals all the hidden-away traces in their trees/branches/twigs, so you would see anything in E:\ (which in my case is the stick).

Last time I tried to boot Ubuntu I got the "ubuntu" logo with dots underneath it for about half an hour; "Esc" brought up dossy white text in the top left saying something about a wrong or missing password. I did put a password in when asked in an earlier attempt.

Wubi does take AGES to install the OS. I've been waiting for someone (you 😉 ) to tell me how small I can make the installation folder - 12gb seemed ridiculous but 10gb hit problems, probably unrelated to size of folder ?:|

I will have another go later via Windows Explorer\E:\Wubi.exe, rather than waiting for boot.