Hi, recap your case. I found 'per-contact-ringtones' in your installed list. May be you should remove any contact related packages like that for now, as it's reported that it has issues with the delay until next update.

Also, my further recommendation to you is that if your calls are very important then you should really take extra care when installing anything from extras-devel or extras-testing as they'd put your phone into very unstable status. For me I'd test the most critical functions prior to attending to some important business trips as I play heavily on the extras-repo like you.