1) I believe 67774 is currently awaiting repairs, the reliability of our E300s has never been great to say the least!
2) Yes, rather so. The vehicles are regularly found in 'limp' mode, and regularly struggle to last a full day in service. For example, 47680 couldn't even last one trip in service last Thursday morning.
3) Rumour was that Norwich Streetlites were to replace the AU58 Eclipses, and then that rumour changed to claim the remaining ex-Weymouth B7RLEs currently in Norwich were to be transferred to Ipswich. Neither of these have occured. The issue is that the Streetlites and Eclipse II B7RLEs are supposedly incompatible with the guidewheels/arms required to serve the guided section in Kesgrave, thus resulting in the AU58s being moved off of Felixstowes onto 66s. Originally, the council claimed they would replace the guideway with a bus-only regular road if new vehicles (the StreetDecks) were ordered, however this never came to fruition. This means that the odd journey in the day that cannot be operated by the AU58s due to operational circumstances have to divert around the busway, resulting in delays and the stop on the busway being skipped. Alternatively, some drivers have taken it upon themselves to drive down the busway in non-guided vehicles (such as StreetDecks), which I'm sure First's management are not too fond of for obvious reasons...