This is the very reason why I wrote how to downgrade MySQL. A friend’s service provider only offers MySQL 4 and probably wont upgrade to version five for some time. It was becoming a pain to continually correct tables before unloading. The solution was to match his service provider’s installation hence the downgrade.
My personal advice would be to downgrade just makes life easier. I have two versions of UniServer running either MySQL4 or MySQL5 and use the appropriate one.
If you are running your own servers use MYSQL5.
If you wish to downgrade check out this page on UniCenter:
http://center.uniformserver.com/uniserver/..._to_mysql4.htmlThere is no right or wrong answer use what ever meets your needs.