"An application will be held dormant in memory alongside other applications
•If the operating system becomes short of memory it will discard the cached state of the oldest dormant application
•This process is called “Tombstoning”
•The page navigation history and a special cache called the state dictionaries are maintained for a tombstoned application" [link]
Szerintem a kiemelt részek erőforrások.
De komolyan, használod te rendesen a WP8-adat? 
Persze, 1 GB RAM-mal könnyebb az élet, de a néha magukba szakadó alkalmazások ugyanazok.
