The ones that behave strange is the One that comes with Joomla (Article - Newsflash) and one from RocketTheme called RokNewsPager. Both gets this error if I have SEF on and go to the user profile. They behave as normal on all other pages except when CB Profile is on.
So my conclusion is that CB Profile triggers something when SEF is on. With SEF of all normal.
If I turn on debugging I can't access the site, I'm getting this error then, also related to CB:
500 - JDatabaseMySQL::query: 1146 - Table 'mydatabase.jos_components' doesn't exist SQL=select count(*) from jos_components as a where a.option = 'com_community'
Jan