I've tried it today myself already, after resetting the explorer. That was why the explorer was offline some time today, because I had to raise the limit, what the explorer shows for a single address and therefore you have to refill the Abe-database again, which takes ~4-6 hrs. The limit for the shown tx's per address in Abe is 1000 normally. That address has so much transactions, you won't believe it. You would have to wait really long, until the explorer has found all the single transactions. They start somewhat in June and then several tx's per hour. Just try it again when the explorer is less busy. Then you'll see, that all the reward-transactions are above ~250000 ...

Edit:
As I see, the server is overloaded at the moment. That is, why I left the limit at 1000 previously.
So please, people, have mercy with the server and don't try to check that address all at once now, so that at least the normal operation of showing the blockchain can still work. Thanks.  

Edit 2:
FYI: That address does not have so much balance, since all the rewards go straight into Cryptsy normally.