On my iMac running latest OSX, I get great speeds (about 10mb/s.) On both my linux laptops (one runs ubuntu 13.04 the oher runs Mint 14.) On both the transfer speed hovers at maybe 130kb/s.
I tried increasing the speed of samba, which helped but not enough on these laptops. The HDA is also only accessible through the network interface in nemo, and it's listed under "Windows Nework -> Winterland -> HDA" (winterland is the actual name of my network group name.) On OSX the HDA is autmounted on start up, and generally navigating the folders is quite fast.
I found similar posts here, but most discussedd how to get speeds faster than 50mb/s. I would like to get up to that speed if it's possible.

I'm running ubuntu server 12.04 64 with Amahi on a modified laptop. I'm using apples airport extreme as my main hub. I have 5 devices conntecting wirelessly to this setup: namely, 1 apple desktop and 2 apple mobile devices, and then two linux laptops.
Terribly annoying problem.