[FLOW3-general] Shaky Authentication

[Mario Rimann]

Hi all

I've built a simple login controller which takes a username and a
password and redirects to the "inside" of the application if the
authentication process worked out.

The thing that drives me mad at the moment, is that it seems to work for
n times, then id doesn't - and after fiddling around (*) it starts to
work again.

*) clearing the whole FLOW3 cache, clearing up the database, creating a
new user account, clearing browser cookies, taking another browser, ...

In the security log, I have the following lines:

12-04-19 23:16:50  127.0.0.1      NOTICE    TYPO3.FLOW3
Successfully authenticated token: Username: "employee"
12-04-19 23:16:51  127.0.0.1      NOTICE    FLOW3
Authentication failed: "Could not authenticate any token. Might be
missing or wrong credentials or no authentication provider matched."
#1222204027
12-04-19 23:16:51  127.0.0.1      INFO      FLOW3
Redirecting to authentication entry point with URI MyCompany.MyPackage/login

In case it's not working, I'm getting redirected to the loginAction()
again and again as stated in the above log.

Any help is appreciated!

Best wishes,
Mario