[Typo3-dev] FE user group relation

[Tim Wentzlau]

To my supprise i have discovered that the relation between a FE user and 
assigned FE usergroups is not a real db relation but a comma separated list.

This construction makes it a little difficult to make a nice and fast 
sql statement that returns all FE users in a FE user group. Has any body 
any expericse with that.

Is there a hook that is called every time a FE user record is saved. 
Then it is possible to make a table with real FE user/group relations.

Tim