I have a drupal site that has been running for about 1 year. there are about 1000 members in the users table
recently I have noticed something very strange the Users uid field is no longer inrementing sequentially.
It now jumps up in the 10s, for example, my last 8 users, the uids went from 7999 to 8068, 8094, 8350, 8416, 8458, 8534, 8566.
So sometimes it is jumping 100s at a time.
How can I work out what might be causing this, and should I be worried?