[TYPO3-core] RFC #12205: Cannot login after upgrade from 4.2 due to missing authentication method

[at]

Rupert Germann wrote:
> Oliver Klee schrieb:
>> I no auth methods could be found, couldn't TYPO3 automatically delete
>> the cache files and then check again (without causing an infinite loop,
>> of course)?
> 
> hmm, would be an option. But is it really needed to do so much effort 
> for a sitation which happens only on some installations and only once in 
> the installation's lifetime.
> IMO an improved message is enough.

Is there any real performance issue to delete temp_cached files on 
Install Tool "login" ?

Patrick