@anpe
Did you install a new SVN of the TV-engine? Last week I had a same of problem, because the schema (database name) has been changed from tvlibrary to mptvdbrc1. The old one still exists, but doesn't programmas anymore. Maybe you have the same problem. If you use MySQL as the TV Engine database, you can check this by running the MySQL Query Browser and login (connect) as user root / MediaPortal, but don't select a default schema. Ignore the warning. Then you see on the right side pane all the available schemas. If there is that mptvdbrc1, you can double click on it else choose tvlibrary. Then the query browser shows all the tables within this schema. Just double click again on, for example, setting and execute it (cntrl enter). The query browser shows a table with all the settings of the tv server. On the bottom you can see if the XMLTV has updated the guide.
Thanks for your answer P.Niem!
I am using 0.2.3.0 stable atm... this is bc i stumbled upon a weird problem when using 1.0 (gui lags like hell on a core 2 duo 2ghz with 2 gig ram and a graphics card with 348mb ram) But i guess that answers my question? MP web is looking for the db in the wrong place even if i point it at the right database?