Hi,
I have my buddypress site which was earlier on cloudlfare + maxCDN network and it used to work fine with W3Total cache 9.2.8 version and I never bothered to upgrade it. I have varnish installed as well on ubuntu, apache2 and PHP5 setup.
Yesterday I decided to upgrade to latest W3Total cache and this time I also thought to get rid of cloudflare and so change minify settings from disabled (as cloudflare was doing it earlier) to Enabled in W3Total cache plugin.
I also purged all cache from my CDN network from their dashboard. I expected that changes will take time and today morning I have so many issues, I cannot login to my dashboard and server returns 500 error in the apache/varnish log. Although when you do refresh the page loads but everytime I click on any link on site I get resource not found error, only after refresh the page loads back. I cannot login to my dashboard anymore even refresh don't work for logins, I am redirected back to login page.
Its so frustrating also no user of my site (http://travelpal.eu) can login.
I am not sure whats causing it, but all I know is I did the following :
1. Removed cloudlfare + upgraded to 9.2.11
2. Added minify settings and some tweaks from http://support.netdna.com/pullzone/wordpress-w3-total-cache/
Any help will be really appreciated I was thinking of disabling W3total cache plugin through FTP as I cannot even login to dashboard but then I decided to ask here first.
Thanks.