Common Caching Settings
Enable general cache
Checking this option allows you to cache rendered pages that are not controlled by your skin. This option is checked by default. See your Collection Cache Settings for the existing skin output caching.
Enable for new blogs
There are two options under this section. One is to enable page cache and the other is to enable widget cache, both for NEW collections. See your Collection Cache Settings to double check your existing cache setup. Enable page cache is checked by default.