I have installed on Debian x64 the Opcode APC 3.0.19. As cache file, APC uses a large file: 512MB (my VPS has 2GB of ram).
Everything goes well, I have setted W3TC to use APC for Page Cache, Minify Cache, Database Cache and Object Cache: the amount of cached files in APC is only 150MB, but once or twice a day my server crashes.
But if I don't use APC for Object Cache, everything is very stable. But I don't want to use "disk" as Object Cache method because is slower then APC.
Do you know about any problem or issue or bug?