Hi I am pretty new to macs but can not seem to find an answer for this online although I have seen other people reporting similar problems. I have a little 4 port non powered USB 2 hub, I also went today and bought a powered version. However when I connect either both are ridiculously slow when using them for transfering files to my USB memory stick. However the memory stick works fine when connected to my imac direct. This is on my 20" imac btw running snow leopard.