Mine had gone and then went back up again. All my bars were frozen for a few weeks regardless of my activity.
Mick's trying to sort it now, apparently everyone's points have been registered and will be added correctly at some point in the near future, but at the moment, the attack on the site has resulted in several parts of the site not working properly.
Have you noticed the glitch where the last word of the first line of a post is sometimes repeated as the first word of the second line? Eg. Your post above but, but Just something I've noticed, unless a lot of us have st-stutters.
I noticed my 'Activity Bar' had frozen. I didn't come on between mid-December and mid-January, but I've been on regularly since. I must have posted about 300 times yesterday
When the site has finished updating itself you'll be on a lower level than you were before as well. The boundaries are being adjusted so that it takes longer to get up to the top levels.