Twitpocalypse II has struck. In Twitterlator Pro, my Twitter client of choice my new "tweet" count has gone AWOL and the feed always opens up at an old feed necessitating me scrolling up through loads of old tweets. Irritating though not life threatening.
An email to Twitterlator's developers Stone, prompted an impressively speedy response identifying Twitpocalypse II as the culprit.
Apparently an update is awaiting Apple's App Store approval process, so I'll keep checking my App Store Ap for an update.