Today I decided to install Yahoo! Messenger 9 on my better halfs laptop. I uninstalled version 8 and then installed version 9 (beta). Everytime I went to run it I got an error message. Anyway according to my friend Dermot you need to remove every file from 8 before installing 9. To make life a little easier he has written a small program that removes all traces of Yahoo! messenger from your computer. You can get it, along with his program for removing the adverts from Yahoo! Messenger at HERE 
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