This report may help users of CloudFlare and W3 Total Cache.
Since a while I switched this site to CloudFlare and experimented a weird trouble that I finally could resolve with the help the CF Support team.
When navigating from the main page to another page and back, 2 or 3 times, the main page all of a sudden was displayed as a binary file.And it could not be properly displayed anymore until I emptied my browser cache.
But the funny stuff is that this bug came out ONLY in Firefox. Not with Safari, or Chrome.
This has been finally resolved by setting the Page Cache (in W3 Total Cache), from "Disk enhanced" to "Disk Basic".
Now all is fine! (thanks to Lyn and to Damon at CloudFlare).
And as said in other posts here in this forum : the minify plugin of W3 cache may not be used together with the one of CloudFlare. Just choose one.
Hope this will help.