Pirex Fund (http://www.pirexfund.com) reported as scam HYIP. You can see detail report about this program at Scam Programs, exactly at Pirex Fund - pirexfund.com scam
Also you can read list of scam HYIPs for this week at HYIP blog. Here you can read that list : Weekly Scam HYIP – Don’t Invest
Finally, be careful with Rosalin Finance, this program reported as selective paying program. They make a random payment. So....please stay away from Rosalin Finance