I run cudaminer since 2 hours this morning.

My hashrate (top right says 300 Kh/s and is changing, so it seems it works.
If I click on "My Workers", I see a current hashrae, it's changeing on reloads, so it seems to work.

But my round shares, both accepted and rejected do not change. Of course my payout does not change too.

CudaMiner gives me a lot "accepted x/x" messages, all 99%+ (yay!!! ).

Anyone has an idea?

Your balance will not reflect coins you have mined until they are a) traded for BTC (in the case of coins you have set to autotrade) and/or b) the rounds have completed and the block has matured (in the case of altcoins you are keeping).

The Estimated Unexchanged balance is currently broken, and the confirmed exchanged balance can be delayed. The only balance you can take as 100% accurate is your actual balance. This balance is updated once per day, when payout occurs at 11pm US Eastern Standard Time.

Occasionally some blocks mined on a specific day will not be part of that day's payout. This could be for a number of reasons, including the time taken for blocks to mature, the time taken for deposits to exchanges like Cryptsy to confirm, and pauses for the best possible moment to trade.

The best way to judge your earnings from [Suspicious link removed] is over the course of a few days mining, as this allows time for all of the above factors, along with variance/luck as is the case with other types of mining pool.