I have tried both too no avail.
The suggestion here is:
http://www.bleepingcomputer.com/uninstall/2852/Yahoo-Toolbar.html
"C:\PROGRA~1\Yahoo!\Common\unyt.exe"
Look for unyt.exe . Perhaps running that will remove the crap.
Normally, that would be the program that runs when you attempt
to use regular uninstallation. It's not a "cleaner app" as such.
If the uninstallation "was a success", such a file could well
have been removed as well.
There are more extreme suggestions available.
http://www.bleepingcomputer.com/forums/topic407664.html
In that thread, notice the CLSIDs left behind. A CLSID is
a mapping from an (arbitrary looking) number, to a program name.
Which implies Yahoo potentially still has a couple pieces of
code hiding in there. Using Regedit and examining the CLSID info
might give some hints. Try searching in Regedit, for those
particular strings of digits in the CLSID example values,
and see what pops up. It might hint at what is keeping it
alive.
http://www.cryptodan.net/img/registry_settings_left_behind.png
I'll even type them in, for posterity, so others can find them.
29F458BE-8866-11D5-A3DD-00B0D0F3BAA7
6EDCD38E-8861-11D5-A3DD-00B0D0F3BAA7
And no, I'm not installing a Yahoo Toolbar,
to verify those values. I'm still toolbar free here...
HTH,
Paul