A Google developer, formerly on the Android team, provides a detailed, fair, and clear explanation of how iPhone OS 4 multitasking will work. Robert Love explains the difference between true background application multitasking and Apple's limited set of APIs that let certain processes continue to operate in the background. He also differentiates serialization (quitting an app while preserving its state precisely) and true background operations. follow link
Track Changes Dates Reset on Save As in Word 2008
If you regularly use the Save As feature to create new drafts while working in Word 2008, you might notice that with Track Changes enabled, previously time-stamped comments and edits have their times reset to the Save As date and time. Work around this by sticking with your original file, but using Save As (or just File > Duplicate in the Finder) to make backup copies.
- ExtraBITS for 12 April 2010 (12 Apr 10)
Google Developer Explains iPhone OS 4 Multitasking