Thanks for your willing to help!..
So, after many many re-installs and re-configurations i have reached at this point:
-New accounts are created, they are able to send e-mails
-If the administrator user creates a folder there is no-way to delete it afterwards (permission denied)
-Isn't needed to create the cyrus admin user first? Because in config files there is an account cyrus with blank password...and of course imp cannot login..
-Finally there is something with horde's config because when first loading a page not all menus are shown except if i press reload button
When i was installing the packages i noticed some errors on php packets about 'file not found' from tmp directory and something like this but couldn't find any logs for this...
I know there are a lot and various problems, thats why i am wondering if they are due to different version from 5.1 to 5.2...
Thank you for your time