I still have this issue, after upgrade to firmware 1.06 BT worked as it should but for no reason known to me it just stopped after a few days. When I say stop I can't paste in a URL torrent anymore, I can start a torrent if I download it and load the file instead (via IE, Chrome doesn't work for me).
I have reinstalled the BT software, reset to factory default etc but it doesn't change anything.
Worth to meantion is that I can't install the BT 4.4 (easy search) version so I need to installed the BT4.2 version via the Mac installation instruction.
Anyone solved this issue with pasting URL torrents?