Not directly wordpress related, but I figure there ought to be someone with the right kind of knowledge here.
I just switched hosts, and one of the main reasons was that when working with wordpress on the old host I would constantly get either blank pages or unprocessed php-files sent to my browser. What I wonder is: am I right in assuming that this indicates that the server is overloaded and doesn't have enough cpu-time for all accounts?
Could this be a security risk as well? I mean, if someone attempted to access for example wp-config.php and the server returns the raw file they would get the database password and so on. And that could be bad, since this particular host by default sets up databases with the same password as the user account.