The same thing happened to me and I stopped mining the pool. But then for days after I kept getting those small chunks. The hash you threw at the pool does pay off it just takes ALOT longer than what your used to with other pools.
I will try and grab a screenshot of my received payments to show you.
That being said I honestly think some adjustments need to be made to the pool.
First. There has to be some some way of seeing the amounts the pool has mined and what is owed to each user address. Any miner who has done this for awhile knows that hash costs money and they need to be able to check on profitability.
Second. Whatever trickle setting the pool uses to avoid a pump either needs to be increased or eliminated. What I mean by that is it needs to buy bigger chunks of XSI (look at poloniex market history, its not hard to see what its doing)
Slow steady payments are fine but we need a little bit more transparency.
Just my thoughts on this. XSI is still going to rise but things like this will drive away miners and investors. Its silly that a pool that does things to protect a coin from a pump and dump should be this confusing.
Onward.
Edit:
here is a screenshot of my recieved payments from the pool. Keep in mind that I went from renting a 50 MH/s x11 rig on the 13th to just using a small video card (450 kh/s on x11) for the past few days.
This is the tail end of it too. The payments started on the 13th.
Also ignore that 4320. That was a deposit. Not from the multipool.
Why do I have to 8MH scrypt such small payments?(5 for the workers `1.6MH)