For the record, I started using Xcode before it was called that and people have said this almost every year since. As I recall there was a big hit to its quality when they converted it to obj-c’s short lived garbage collection, and it felt like it never got back to reliable after that.

  > converted it to obj-c’s short lived garbage collection
that was around xcode 4 iirc, that was when interface builder was ducktaped (or maybe i should say intermixed) with xcode (née project builder) to disastrous results in terms of performance... its never really recovered imo...

Ahhh ProjectBuilder...