I am not sure how to troubleshoot this problem.
I just got blank screen after I activated "WP Minify" and my Nginx error log just shows something like below:
[error] 27538#0: *359 FastCGI sent in stderr: "PHP Fatal error: Call to undefined function curl_init() in /AAA/BBB/CCC/wp-content/plugins/wp-minify/wp-minify.php on line 391
PHP Fatal error: Call to a member function get() on a non-object in /AAA/BBB/CCC/wp-includes/cache.php on line 112" while reading response header from upstream, client: XXX.XXX.XXX.XXX, server: myweblog.info, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/PPP/QQQ.sock:", host: "myweblog.info"
WordPress version 3.3 (fresh installed)
Database: SQLite3 (with PDO SQLite plugins v2.7.0)
Web Server: Nginx 1.1.11 (with fastcgi via php5-fpm v5.3.8)
Everything is back to normal after deactivating "WP Minify".