I have been a fan a Scalix for years and am pleased that development in back up and running.
I have also just updated my MS Office to 2013, well 365 actually but I don't think that will make a difference. I have 188.8.131.5207 server and the latest connector, just downloaded and installed before writing this (12.1.3). overall it works great until I disconnect from the Internet and start Outlook and it crashes every time. a few days ago I tried this while on my train commute and after loads of crashes I did get in. When I went back online it all reverted to normal again.
I have tried setting Smartcache to prompt when starting Outlook and no difference. Not experienced this before. Have I missed setting something?