I've recently installed Windows 7 Ultimate. Very impressed so far with Media Centre. It picked up my Pinnacle DVB-T card and tuned in the DTT tests fine. Recording feature works very well and I like the integration with the Media Player libraries. The MHEG teletext works well.
I find, though, that Irish language characters are not being displayed correctly in the EPG. Characters with fadas like á é etc. are displayed like characters from Scandanavian alphabets. See attached screenscrape. I've ensured my keyboard settings are set for Irish.
Another slight issue with the EPG - the downloaded version works well, but I can't seem to get the transmitted (in-band) EPG if I turn off the download feature (by not accepting the terms and conditions). The documentation indicates that the in-band EPG should work to update the downloded EPG, should there be a programme change, but I can't seem to get it to work. Any tips?