10.9.1 ruined up Mail for me
Mavericks has been a major problem with crackling noises on my Presonus Firewire audio interface but only when playing full screen movies. Also movies streaming from iTunes on another Mac would stall - but both these issues were fixed by removing iStat Pro widget.
So my advice is to strip back any third party apps that might be incompatible before blaming Mavericks.
On the other hand Apple have totally screwed up Mail with 10.9.1. It was a disaster from day one in Mavericks and Apples half baked attempts to fix Mail are just making things worse. In 10.9.1 using mail signatures to control the font in outgoing emails doesn't seem to work. And mailing a web page from Safari is now a joke.
Mavericks has been a major problem with crackling noises on my Presonus Firewire audio interface but only when playing full screen movies. Also movies streaming from iTunes on another Mac would stall - but both these issues were fixed by removing iStat Pro widget.
So my advice is to strip back any third party apps that might be incompatible before blaming Mavericks.
On the other hand Apple have totally screwed up Mail with 10.9.1. It was a disaster from day one in Mavericks and Apples half baked attempts to fix Mail are just making things worse. In 10.9.1 using mail signatures to control the font in outgoing emails doesn't seem to work. And mailing a web page from Safari is now a joke.