The problem is particularly acute with documents prepared using Microsoft Word because of the way it maintains hidden records about editing changes.

BBC: NEWS | Technology | Warning over Microsoft Word files

Sharing and editing video clips is also easier than ever, as the D3100 records movies in the versatile H.264 AVCHD codec (.mov file).

ENGADGET: Nikon D3100 gets real, adds 1080p movie mode with continuous autofocus

The two models announced today feature the iFrame video mode, which records in the same format used to edit on a computer, dramatically speeding up the processes of importing, editing and sharing movies across multiple platforms and devices.

ENGADGET: Sanyo unleashes two iFrame compatible Dual HD camcorders