remove from folder bug & cache comment

There is a bug when deleting pages. Here is a test case: 1) Add a *Test* link to the Introduction page 2) Click the Page link to create a new Test page 3) Save the Test page 4) Go to the Information folder and "remove" the Test page 5) Go back to the Introduction page and click the Page link to create a new Test page 6) Save the new Test page 7) Go back to the Introduction page -- the Folder, Page, Resource items are still there. However the Information page contains a Test page. If you click the Page link again, it will create a Test1 page, but it won't update the Introduction page. Also, the cache uses a simple scheme for assigning keys (+1). Isn't this scheme too simple for web apps? For example, I could look at the page source, and come up with callbacks that are likely to be valid. For example, if I see callbacks for 341-344, I could try evaluating code for 340. This might execute a callback for some other person. Shouldn't the keys be some large random number instead? John Brant