I've noticed both the BBC and Sky making a lot of on-screen errors in the last few months (sometimes I'll grab my Sky remote, rewind get a photo if I can) and also errors on the BBC website.
It's not good, but inevitable when you have a mixture of fewer staff, less sub-editors and people rushing to be first. I guess besides a little joke or sigh, there's no major harm done - unless the typo is enough to suddenly say something offensive.
The most recent was Sky talking of the 'Mars Landind' on-screen for some time before someone noticed and they pulled the graphic. Again, nothing major (the error, not the Mars landing!) but does make me think it doesn't reflect well on the media as a whole.
There have also been loads of subtitle errors (my great aunt is losing her hearing and uses them a lot). It's got worse since the move to Salford, so it's possible that staff cuts have left less time for proof reading. Subtitling live programmes has always caused strange results, typing them into phonetic keyboards and relying on a form of spelling checker does that, but this is on recorded programmes and is often is not changed when they are repeated.