Hello from the USA,
Just ran an app scan with definition version 130321-01. Following aps detected .. all with Android:FakeInst-EY[Trj]
Pulse
Amazon Kindle
Amazon
Touchpal Contacts
Gmail
Hotels.com
Flightboard
MOG
Roku
Group Play
WABE
Viber
Regards ...
EDIT Problem now resolved! Followed advice above and tried to manually update definitions. Even though it was reported that no further update was available, a subsequent app scan produced zero results.