Also check these locations and clear any cookies that has "Mach1" in it
ie..
yourname@mach1registry.org
/windows/temp
/windows/cookies
/document and settings/user-name/cookies
/document and settings/user-name/
/document and settings/user-name/local settings/temp
/document and settings/user-name/local settings/temp internet files
/document and settings/user-name/local settings/history