[ubuntu] Samba - slow wireless file transfer

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http://ubuntuforums.org – I have an laptop running 12.04 Ubuntu, which is acting as a dedicated NAS. I store all my photo and videos on it etc I use Samba and smb.conf to share to other devices. I can access it and transfer photos etc from my phone and a windows 7 netbook. I get wireless transfer speeds of 2MB/sec on these devices. I bought a new iPad and installed the paid app filebrowser - so I could access the NAS over wireless and copy files or view photos etc. But the transfer speeds are 100KB/sec. No matter what file I transfer I get really slow speeds. I contacted the makers of file browser and they sai (Hardware)