[horde] trouble with horde upgrade / reinstall

[Joe @ 3ZZZ]

>> tyvmia
>  you can uninstall it in one line:
> pear uninstall horde/horde horde/imp horde/...
>
> But if the configuration is out of date you can use the update button,
> webserver need write access to the conf.php and conf.bak.php files.
> --

Thanks - I've tried 'Update all configurations' and 'Generate Horde  
Configuration' button on the General page.  I set the config folder  
and files to 777 for the moment.  There are no errors but nothing  
happens, no new files are written in the config folder.

Test page looks good although there's this "This version of PHP has  
not been fully tested with this version of Horde." (PHP 5.4.7)

I figure must have done something wrong but can't figure out what.