Confusing password quality settings?!?

Hello,

is someone out there with experiences in password quality settings? We set the required password quality in the Security Settings document to 8. According to the notes.net article (http://www-10.lotus.com/ldd/today.nsf/62f62847467a8f78052568a80055b380/098c9f7d4a0cccbd85256abc0011e4f0?OpenDocument&Highlight=0,password,quality) “Understanding passwort quality” I tried several passwords unsuccesfully:

aphmexug

hPg7;x

h7 pgBxj

The funny thing is, that even the password “ubf4 l” doesn’t work, but “ub f4l” works. Or “a7 hou” doesn’t and “ah 7ou” does… So I don’t understand the background, because all the passwords meet the rules in the article, but they don’t work?!

Can you explain me or do you have some links to documentation?

Thanks in advance

tla