I don't expect advice from people that have experienced it, the fact that there are others posting here suggests it isn't an isolated problem (and the fact that my 925 started doing exactly the same thing). What I'd like to know is what causes it so something can be done about it. If it is a software bug, where is the fix? If it is something to do with a bit of software installed, what bit so it can be uninstalled? It's all very well saying that a restart solves it but when you don't know it has done it and end up missing calls it defeats the object of having a mobile phone.
forums are for venting.
occasionally you will find someone who has the same issue and has found a solution, so definitely worth posting issues and asking.
but don't expect MS to be bothered.
have a look over at the MS community support forums. issues sit there for a year or more without resolutions. Occasionally some other user will have a workaround, and there seems to be some MS employees/volunteers who reply with totally unhelpful answers - like refer you to another discussion in another area that refers you back to the one you came from; or, in one case, delete your account and start again!
I don't visit WC often these days but when I first got some mew MS stuff, phone & tablet, I had a good look around to shorten the learning curve and I noticed for a lot of issues there was a little fan boy club who always chimed in with
it will be better in the next release, patience. complete BS.