[Typo3] Problem: Login cached?

[Daniel Doesburg]

Hi list,

Simple question (but not for me :-))
I've a site with the next extensions:
- newloginbox
- arotea_loginbox
- sr_feuser_register
- iim_feuserspasstype

Now, if someone logs in, the name of the previous user is displayed.
But only on the pages where the prevevious user has been.
So it looks a per page caching that includes the username.

The permissions are from the right user. But the showed name is from the 
wrong/previous one.

How can i avoid that the loginname is cached on the backend, on the server?

Regards,

Daniel