I am running my blog on a server with APC installed. If i enable both APC and WP-Cache i get blank files. I've addded
apc.filters = wp-cache
to php.ini in the [apc] section but that doesn't seem to help. For the time being I've disabled APC and am using WP-Cache because the performance gains are more noticeable.
Please look into this and let me know what I can do so that both APC and WP-Cache exist happily together..