After taking my battery and SIM card out and putting them back in a few times, those glitches no longer occur for me.
I get about 48h of light use though. Battery life used to be worse, but I was able to tell an indexing service to only run after boot and not during use. Might be updates overwrite user customizations, so I need to do it again.
After that update the phone refused to talk with Debian Wheezy and Windows 7 over USB but Ubuntu 14.4 LTS works just swimmingly now, and it's what I use on my desktop anyway. That update finally resolved an issue with the screen not wanting to unlock, and now it's smooth sailing.
I'm actually quite happy with the phone. I expected issues when I bought it and since I'm proficient with Linux I can solve them from the command line interface. The phone won't let me copy-paste from the GUI to the CLI; as per a bug report this functionality is pending robust sanity checking and security.
The keyboard is very sensitive in just the right way and once I got used to the UI Android started to feel like a bygone era. I'm Finnish, and during the holidays I'll probably be expected to advise my relatives on whether or not they can upgrade their tablets to Jolla's new device.
(p.s. I had only just learned to use QtCreator for Symbian when the Microsoft deal was announced. Jolla relies on Qt, so getting started with Qt was in fact not a waste of time. I'm looking forward to learning functional C++14!)
