Hello hexhex, and welcome to the Monastery!

From Settings Nodelet | Newest Nodes:

Order nodes by: You can control the order in which nodes are listed in Newest Nodes. Currently, the available options are to order by creation time, by author ID (not name), or by title. The default is to order by creation time.

Update:

Also, under User Settings, in the section Note Configuration, there is a setting for specifying Note ordering.

Hope that helps,