I've had that today as well, I've been adjusting the phrases and so I've tried adding in an English entry for this. Hoping it will be enough to fix the problem.
Also noticed that when a topic wins, and rep is an option to be added, it sets the setting wrong.
To explain.
On my board the rep points is like the above post, but it then sets the user as having only '6' points in the name of the rep level, while the actual points are added to but not displayed in the name. Yet, the rep symbols remain the same.
User 1 has 450 points (on my board that is
Ace 2nd Grade) which means a user normally displays 5 of the

symbols.
User 1 wins the nomination contest and gets 6 points.
Now in the postbit 5 of the

are show, the system reads 456 points through the Admin CP, but when you hover over the

it acts as if it's only got 6 points, and so displays
Harmless the 0-10 point level in my rep system.
Images to show:
This gets 'unstuck' when rep is added, and goes back to behaving normally.
On another point, the month competition ended today, already, even though it's not the end of July.
It's then setup a new thread for 'August' even though we've just finished the 'August' contest.
Hope this all makes sense
Edit: PS Not upgraded to 1.51 as the cron job didn't seem to be relevant to me.