It started a few days ago when I was still running 6.10.
Never seen this issue before.
Then yesterday I have updated to 6.10.1 but it did not help and the problem persists.
This is really horrible, as I regularly use the map module for geo tagging.
Version von Lightroom: CC 2015.10.1 [ 1117303 ]
Lizenz: Creative Cloud
Betriebssystem: Mac OS 10
Version: 10.12 
Anzahl logischer Prozessoren: 8
Prozessorgeschwindigkeit: 2,3 GHz
Integrierter Speicher: 16.384,0 MB
Für Lightroom verfügbarer phys. Speicher: 16.384,0 MB
Von Lightroom verwendeter phys. Speicher: 744,1 MB (4,5%)
Von Lightroom verwendeter virtueller Speicher: 1.888,3 MB
Cache-Speichergröße: 115,4MB / 3.864,7MB (3,0%)
Maximale Anzahl Threads, die Camera Raw verwendet: 8
Camera Raw SIMD-Optimierung: SSE2,AVX
Virtueller Speicher in Camera Raw: 46MB / 8191MB (0%)
Monitore/Anzeigegeräte: 1) 2560x1600
Even 30 days to fix this would be fine IMO. A week without an ETA, though... not so much.
edit: apparently in addition to pretending that individual system specs or network information is useful in resolving this issue, they're telling users who call tech support that the issue is with their own (the user's) networking settings. Absolutely unreal.
This is incredibly annoying.
Lightroom version: CC 2015.10 [ 1111918 ]
License: Creative Cloud
Operating system: Mac OS 10
Version: 10.12 
Application architecture: x64
Logical processor count: 8
Processor speed: 2.6 GHz
Built-in memory: 8,192.0 MB
Real memory available to Lightroom: 8,192.0 MB
Real memory used by Lightroom: 420.7 MB (5.1%)
Virtual memory used by Lightroom: 4,024.3 MB
Memory cache size: 954.7MB / 1,856.4MB (51.4%)
Maximum thread count used by Camera Raw: 8
Camera Raw SIMD optimization: SSE2,AVX
Camera Raw virtual memory: 673MB / 4095MB (16%)
Displays: 1) 1440x900
Graphics Processor Info:NVIDIA GeForce GT 650M OpenGL Engine
Here is my dirt. Lightroom 2015.10.1 Camera Raw 9.10.1 MacBookPro9,1, Memory 8GB, MacOS 10.12.5 on SSD 1TB with 59% available. Plug-ins are disabled in LR also. I seem to recall odd behavior when loading a tract and tagging photos, I may have had to do it twice to get it to tag. Mac OS with two monitors and all of Mission Control turned on.