eerhmm or i count the wrong number 3 times after eachother
or it really should be 25 lol still it shows 24 .....
its not like it sux a lot for me but still it's a bug to fix

It shows 25...

it says you have done 25 challenges...what is the problem/bug ?

that's cuz i finnished another challenge lol
count the done's.. and look at my rank..
or maybe its only a bug if im logged on

i think the /dev/null/ challs not count in the ranking

Since you mentioned it, I've noticed the same thing for me (and the same goes for paipai). It seems there's a bug in adding somewhere, because others have the correct sum. And dev/null challenges are also counted.

it's called taxes, some of us need to pay a few challenges for the less fortunate challengers among us.