High turnover, specifically in the engineering/QA departments hampers knowledge/experience continuity and flow.
Past super-aggressive release schedule has burned some clients. This has eased considerably, though it hasn't been forgotten entirely.
Open floor office designed to stimulate collaboration, in reality stifles it and actually can create strife between some groups. Just an example of one of those office buzzwords that seem like a great idea on paper.
The on-boarding training process, while it has improved in recent months, is still fairly lacking.