IIRC, mysql wants to have a user called 'mysql'.  Postgresql wants a users called
'postgres'.
From that perspective alone, it shouldn't be a problem.  They use different
usernames, interfaces, etc. so I'm thinking it shouldn't be a huge problem.

"Martin J. Laubach" wrote:

> |  Because of the unprecedented amount of space the mysql user needs to control
> |  [..] I would actually vote that we actually create a database user of
> |  some kind.
>
>   Wouldn't that get problematic if you want more than one database
> installed, say postgres and mysql?
>
>         mjl