Same problem here, started around mid-day today whilst channel hopping between BBC and Sky news. Setup is; 9200T, v23 software, Sudbury TX, sig 42%, qual 100%, no 8XX channels. There seem to be two separate visible effects. They are both intermittent and mutually excusive
Whilst on a BBC channel, every so often (around every 2 to 10 minutes) the text screen pops up as if I had pressed the 'text', or 'red' button. I can clear it by pressing 'red', 'text' or 'exit'. When the text page appears on its own, it can be used normally to access other pages.
Alternatively, a white "please wait" on a black bar appears every second or so, positioned to the left of where the 'mute' icon appears. This is about twice the size of the normal white on red "please wait" bar that normally appears when selecting 'text'. Pressing 'text' or 'red' does not bring up the text screen.
If on BBC1, this "please wait" just continues to flash, but if I try and watch any other BBC channel, after the first flash of "please wait", the 9200T immediately reverts to BBC1, and continues to flash "please wait". If I select another channel and come back to a BBC channel it may behave normally for a while, or I get the "please wait".
Its not the remote issuing commands, I've taken the batteries out of all the remotes in the room (at the same time).
I've tried putting it into standby and powering down completely, and I've done a reset to defaults - neither had any effect. Only BBC channels are affected, all other channels are fine, as are the CBBC channels at this time of night (21:00, not broadcasting programme).
Its clearly an MHEG issue, I guess the beeb have changed something, and we're going to have to live with it till they undo it or Humax issues yet another fix.