Thread:Project:Support desk/WIKI 1.17.0: Preview - all text disappears

Hi,

I'm using IIS 7, PHP 5.3.8 and MySQL 5.5.16

When I edit a page and click "Show Preview", it works unless I 60 seconds has passed. After that amount of time, clicking "Show Preview" brings me to the edit box but all the text has been deleted (including updates and the original text)! So, when I did a few quick edits, it worked. When I tried to work longer on an article, the preview killed all my work.

Any ideas? I tried disabling wincache and switching $wgMainCacheType to CACHE_NONE but it hasn't helped...