Mango would be the "first" that i have heard having trouble getting paid there....of course, i never heard about that months ago...
They have had a lot of problems in the recent past with server issues, keeping the site up, dos, whatever u want to call it.....
But the one thing that always seemed consistant was the praise for their customer service and quick payouts, just gamblers dont really care if your book has good cs, if they cant get down online when they want.....
Seems since MVP took over the site has remained up, and seen no complaints.....probably lost alot of players through the internet problems however......
Time will tell....