Auto Defragment And Norton 360

I recently upgraded my Norton's Internet Security to Norton 360 - which contains a disk optimizer (defrag). Prior to upgrading Norton my Vista Defrag tool worked fine no problem and always on schedule. After the upgrade to Norton, I was setting up the program and the defrag tool in Norton said "pending" which I left alone, because I was comfortable using the native defrag utility. However, now the vista defrag does not work. I went into the the vista tool to look at the schedule and it gave the last run date ( I had it set to weekly on Wed at 1am).

The next scheduled defrag said "Never" despite the box checked "run automatically". I then unchecked the box and rechecked it, and then it gave the next scheduled date which I changed to that evening. I left it alone until the next morning and it not only did not defag per the schedule but the Vista tool said next scheduled defrag "never" and Norton was back to Pending again. I have to assume this has something to do with Norton. I am told that Norton's defrag tool is tied to Vista's tool.