Hi,
My problems with wp-config.php and installing plug-ins all started after having a bad experience with W3 Total Cache. One day, it stopped working fine and I uninstalled it following directions froms the creator.
Now I am hitting 2 major issues:
1) Unable to install any plug-in through the WordPress webpage: I get the following error "Download failed. Failed writing body (1490 != 4243)"
2) I manually installed Quick Cache. But after enabling it through its custom menu, wp-config.php becomes totally blank and brings down my site. This happens every time I try to turn on caching.
Please help - I can't install any plug-ins and wp-config.php seems to get randomly deleted.