In case others have the same issue, perhaps we can identify an app that's the culprit.
here's what I'm running:
NEWS:
NPR News BBC News
Flipboard
Instapaper
USA Today
Currents
SkyGrid
Reuters News Pro
AP Mobile
QuakeFeed
Feedly
Pulse
The Atlantic
Google News
Productivity:
Pages, Keynote
iAnnotate PDF
Readability
TextPlus
Reminders
Notability
Wunderlist
Skitch
Pocket'iA Writer
Documents
Supernote
Quip
GMail
Books
iBooks
Kindle
Goodreads
OverDrive
Longform
SCPL
Reference
Kikipanion
Sente 6
Maps
Google Maps, Google Earth
Maps
Education
TED
Podcasts, iTunes U
Khan Academy
Canvas
Medical
Medscape
MyChart
Trigger Points
WebMD
AHRQ ePSS
Culture Guide
Prognosis
iTriage
OneHealth
MedWhat
FitBit
Video
VLC StrFree
Zoom
Videos
Music
Music, iTunes Store, Garage Band
Stitcher
Pandora
GuitarTapp
Guitar Chords
Entertainment
HBO Go, HBO
IMDB
Slixter
Dish Anywhere
Amaon Instant Video
YouTubbe
PBS
Netflix
VLC
Photo
CameraSharp
Camera, Photo0 Booth, iPhoto, Photos
PS Express
Calendar, Notes, Facetime, Contacts
Utilities
Dictation
Skype
Messages, Find iPhone. Clock
Junaio
WebEx
Speedtest
CalculatorPro
Inner Balance
iBlueButton
Voice Dictation
CloudOn
Newsstand
Storage
Dropbox, Google Drive
Shop
Amazon
eBay
Games
GameCenter
Finance
Schwab
Social
Google+
Nextdoor