I noticed that vdradmin showed yesterdays programinfo in "Playing today" page. Took a look in epg.data file and last update is more than 24 hours ago. I've made no changes to vdr and it has been working quite nicely some time now (seems like a bit more than 4 days this time). Timers are still working as they should. Actually everything else but epg.data seems to be working right.

First thought that maybe epg has not been updated but that would not seem to be propable for all the channels at the same time would it.