After two years of frustration with the user interface, I've given up and switched to MoneyDance. The changes to the way iBank reconciles bank statements make it unusable, as well as messing up all my old - already reconciled statements, which then had to be re-reconciled.
It is virtually impossible to create a split transaction reliably. iBank insists on adding balancing splits which are not only not needed, but which go in the wrong direction, causing the app to add yet another balancing transaction.
The reporting and graphing functions are buggy and arcane - and I've never been able to produce a usable budget. And why on earth is it so difficult to produce a report which shows income and expenditure by category - you have to do it using the graphing tool!
They seem more concerned with adding "cool" features like the ridiculous Cover Flow view than they are with creating an application which actually works.

After a couple of weeks, MoneyDance seems to have fewer "features" but the ones it has actually work.