If the stat "# of attempts" reflects how many total problems one has attempted, and the stat "% complete" reflects how many unique problems attempted, then I think the two should not end up staying the same number.  I am pretty certain that I have repeated some problems, and given that I have completed 12% of the total or so then I should repeat one every tenth problem or so.

However, my # of attempts and my number completed in the "%complete" are the same number.  Is it set to always give you a unique problem with each attempt?  I might be losing my mind but I am pretty certain I have repeated some once in awhile.

Any body out there have two different numbers for # of attempts and % complete?

My %complete matches my # of attempts. A couple of times I have thought I have seen the same problem twice, but it's possible that some problems could have been submitted twice, or maybe one was originally longer but got cut shorter due to two good moves and now those two problems match each other. 

In order to make sure people always have problems to attempt, it is now possible that you get the same problem twice. In our next release we will be removing the % complete portion of that stats panel as it no longer makes much sense. # of attempts is how many times you've attempted to solve a problem. Attempting the same problem twice counts as 2 attempts.