(prologue for the UK readers: yes, we still have the good old teletext service in the digital age here in Finland - my STB rebuilds the old fashioned VBI data and sends it over embedded in the composite video output)
My MX6000 (later IT version, sw 3.1) has had problems with teletext since I got it. Half the rows are missing or come from a wrong page, wrong characters, etc. The data comes through AV2 (configured as decoder, using RGB) from my STB, which creates the teletext signal. My previous TV (non-B&O) had no problems with it.
I could use the teletext function of the STB, but then I need to swap remotes. Is this a known problem I could do something about?