I have had problems with my 3 Reciva based radios over the last 10 days and today I worked out what has been going on. It seems that the BBC have changed something on their servers which seems to fix the "hicups" and "end of stream" problems, but as RECIVA haven't corrected their database fully, their links partly point to the wrong places. If you selelct BBC radio 4, Five Live etc. from the UK long station list- they work, but if you select them from the "BBC National" sub-list, as I always did, then the links won't connect. ALSO, if you have BBC stations set up in the "My Stations" list you will need to delete them and re-add them from the long list.
Hope I helped others, and can someone get my comments back to RECIVA and spread the word to any other forums.