The updated date - did you check user ""iv"" system clock setting? Also odd that the SO-1246 journal is missing the posted by. What's the GL period? In company maintenance, preferences tab, date settings are you prompting for the accounting date and is the restriction on for current and one future period? Those might prevent this from happening again, but odd that it happened in the first place. If the GL is still open for 2008 and the user IV has the system calendar set back to 2008 then I can see why this happened, still doesn't explain the update date. There's a cool tool
http://www.worldtimeserver.com/atomic-clock/ that you can install and set to keep the user's date/time updated.