The site that's running the 1.2.0 release version is having a problem with cron tasks not running. If I manually run the cron tasks, it says it ran successfully, but it did not. The next scheduled time stays the same which is in the past. The only way I can get them to run is to disable/re-enable them.
The only addon I have installed on that site is XenMedia Gallery and I disabled it and it had no effect. The two 1.2 beta release sites are not having any issues, but this 1.2.0 release site is.