Been having a long time issue with my current host ever since they upgraded to PHP 5.4 that anytime an action that sends an email causes the resulting page to error, timeout, double request or connection reset. (No php errors thrown, no access to the apache logs...). Our current server debug mode reports 6 to 7 mb memory usage. I threw up an Apache server with Percona 5.6 tried both PHP 5.3 and 5.4. Its reporting 19 to 20mb a page. Is this being caused by the lack of some installed modules using less efficient fallbacks or is the memory used more related to server configuration and not Xenforo? I guess the basic issue is that I don't know what that memory usage measurement is of.