Just as i figured, the dates are screwed, thats why they arent running, a date of 2008, they will never run.
Would require some server adjustments to fix that, but without knowing your server setup, hard to tell what is messing them up at this point.
Maybe it is. For example, i just launched the user promotion cron job and it updated the next sheduled date. The next run is scheduled for 04/07/2013
I don't think it is server problem - i am running 2 other vBulletin forums on the same dedicated server and i don't have any problems with the cron jobs. Also, all other dates are working fine in the forum (post dates, PM, etc)