I just tried the command

obexftp --bluetooth 00:11:9F:83:EC:DC --channel 12 --chdir E:/Images --list

30 times. Every single time the command returned what seems to be the correct output:

Browsing 00:11:9F:83:EC:DC ...
Channel: 10
Connecting...done
Sending "E:"... Sending "Images"... done
Receiving "(null)"...-<?xml version="1.0"?>
<!DOCTYPE folder-listing SYSTEM "obex-folder-listing.dtd"
  [ <!ATTLIST folder mem-type CDATA #IMPLIED>
  <!ATTLIST folder label CDATA #IMPLIED> ]>
<folder-listing version="1.0">
   <parent-folder />
   <file name="預設圖片名稱(102).jpg" size="62709" modified="20070707T194546Z" user-perm="RWD"/>
   <file name="預設圖片名稱(103).jpg" size="55899" modified="20070707T194502Z" user-perm="RWD"/>
   <file name="預設圖片名稱(105).jpg" size="77001" modified="20070707T194408Z" user-perm="RWD"/>
   <file name="預設圖片名稱(107).jpg" size="68235" modified="20070707T194310Z" user-perm="RWD"/>
   <file name="預設圖片名稱(108).jpg" size="67413" modified="20070707T194226Z" user-perm="RWD"/>
   <file name="預設圖片名稱(17).jpg" size="59742" modified="20060506T184318Z" user-perm="RWD"/>
   <file name="預設圖片名稱(18).jpg" size="38350" modified="20060506T184250Z" user-perm="RWD"/>
   <file name="預設圖片名稱(19).jpg" size="89109" modified="20060506T184144Z" user-perm="RWD"/>
   <file name="預設圖片名稱(20).jpg" size="107916" modified="20060506T184108Z" user-perm="RWD"/>
   <file name="預設圖片名稱(21).jpg" size="90334" modified="20060506T184034Z" user-perm="RWD"/>
   <file name="預設圖片名稱(22).jpg" size="103784" modified="20060506T183940Z" user-perm="RWD"/>
   <file name="預設圖片名稱(23).jpg" size="128575" modified="20060506T224954Z" user-perm="RWD"/>
   <file name="預設圖片名稱(24).jpg" size="107570" modified="20060506T224808Z" user-perm="RWD"/>
   <file name="預設圖片名稱(25).jpg" size="173383" modified="20060506T224728Z" user-perm="RWD"/>
   <file name="預設圖片名稱(27).jpg" size="115920" modified="20060506T224624Z" user-perm="RWD"/>
   <file name="預設圖片名稱(39).jpg" size="138720" modified="20061210T221422Z" user-perm="RWD"/>
   <file name="預設圖片名稱(52).jpg" size="85964" modified="20061210T221318Z" user-perm="RWD"/>
   <file name="預設圖片名稱(57).jpg" size="79759" modified="20061210T221242Z" user-perm="RWD"/>
   <file name="預設圖片名稱(58).jpg" size="91241" modified="20061210T221204Z" user-perm="RWD"/>
   <file name="預設圖片名稱(61).jpg" size="89720" modified="20070106T133308Z" user-perm="RWD"/>
   <file name="預設圖片名稱(62).jpg" size="93224" modified="20070106T133224Z" user-perm="RWD"/>
   <file name="預設圖片名稱(63).jpg" size="93741" modified="20070106T133116Z" user-perm="RWD"/>
   <file name="預設圖片名稱(64).jpg" size="142015" modified="20070106T132928Z" user-perm="RWD"/>
   <file name="預設圖片名稱(65).jpg" size="153838" modified="20070106T132842Z" user-perm="RWD"/>
   <file name="預設圖片名稱(66).jpg" size="56259" modified="20070707T202538Z" user-perm="RWD"/>
   <file name="預設圖片名稱(73).jpg" size="66003" modified="20070121T175652Z" user-perm="RWD"/>
   <file name="預設圖片名稱(75).jpg" size="68658" modified="20070122T125602Z" user-perm="RWD"/>
   <file name="預設圖片名稱(76).jpg" size="78706" modified="20070122T125522Z" user-perm="RWD"/>
   <file name="預設圖片名稱(79).jpg" size="77481" modified="20070707T202458Z" user-perm="RWD"/>
   <file name="預設圖片名稱(85).jpg" size="95998" modified="20070707T202346Z" user-perm="RWD"/>
   <file name="預設圖片名稱(86).jpg" size="90669" modified="20070707T202306Z" user-perm="RWD"/>
   <file name="預設圖片名稱(87).jpg" size="70137" modified="20070707T202206Z" user-perm="RWD"/>
   <file name="預設圖片名稱(89).jpg" size="67172" modified="20070707T202110Z" user-perm="RWD"/>
   <file name="預設圖片名稱(8).jpg" size="40569" modified="20060506T184348Z" user-perm="RWD"/>
   <file name="預設圖片名稱(90).jpg" size="115442" modified="20070707T201820Z" user-perm="RWD"/>
   <file name="預設圖片名稱(93).jpg" size="70135" modified="20070707T201728Z" user-perm="RWD"/>
   <file name="預設圖片名稱(97).jpg" size="60610" modified="20070707T201638Z" user-perm="RWD"/>
   <file name="Image(01).jpg" size="201436" modified="20050923T220502Z" user-perm="RWD"/>
   <file name="Image(02).jpg" size="191792" modified="20480101T080000Z" user-perm="RWD"/>
   <file name="Image(03).jpg" size="191556" modified="20051005T212946Z" user-perm="RWD"/>
   <file name="Image(04).jpg" size="164728" modified="20051006T102210Z" user-perm="RWD"/>
   <file name="Image(05).jpg" size="187240" modified="20051008T235042Z" user-perm="RWD"/>
   <file name="Image(06).jpg" size="172304" modified="20051008T235100Z" user-perm="RWD"/>
   <file name="Image(07).jpg" size="189104" modified="20051008T235130Z" user-perm="RWD"/>
   <file name="Image(08).jpg" size="154228" modified="20051009T000230Z" user-perm="RWD"/>
   <file name="Image(09).jpg" size="144108" modified="20051009T000252Z" user-perm="RWD"/>
   <file name="Image(10).jpg" size="193068" modified="20051009T125254Z" user-perm="RWD"/>
   <file name="Image(11).jpg" size="175332" modified="20060506T143658Z" user-perm="RWD"/>
   <file name="Image(12).jpg" size="190952" modified="20051010T010150Z" user-perm="RWD"/>
   <file name="Image(13).jpg" size="174456" modified="20060422T153816Z" user-perm="RWD"/>
   <file name="Image(14).jpg" size="169256" modified="20051214T215154Z" user-perm="RWD"/>
   <file name="Image(15).jpg" size="179208" modified="20051219T233502Z" user-perm="RWD"/>
   <file name="Image(16).jpg" size="172680" modified="20051010T010344Z" user-perm="RWD"/>
   <file name="Image(17).jpg" size="208944" modified="20060422T162522Z" user-perm="RWD"/>
   <file name="Image(18).jpg" size="163688" modified="20051219T233650Z" user-perm="RWD"/>
   <file name="Image(19).jpg" size="195140" modified="20051010T032722Z" user-perm="RWD"/>
   <file name="Image(20).jpg" size="182388" modified="20051010T032746Z" user-perm="RWD"/>
   <file name="Image(21).jpg" size="186696" modified="20051010T032846Z" user-perm="RWD"/>
   <file name="Image(22).jpg" size="155076" modified="20051219T233704Z" user-perm="RWD"/>
   <file name="Image(23).jpg" size="158596" modified="20051221T205050Z" user-perm="RWD"/>
   <file name="Image(24).jpg" size="201388" modified="20060115T123034Z" user-perm="RWD"/>
   <file name="Image(25).jpg" size="183648" modified="20060131T164442Z" user-perm="RWD"/>
   <file name="Image(26).jpg" size="184660" modified="20060131T164522Z" user-perm="RWD"/>
   <file name="Image(27).jpg" size="179348" modified="20060131T164558Z" user-perm="RWD"/>
   <file name="Image(28).jpg" size="181804" modified="20060131T164630Z" user-perm="RWD"/>
   <file name="Image(29).jpg" size="184928" modified="20060131T164726Z" user-perm="RWD"/>
   <file name="Image(30).jpg" size="183392" modified="20060131T164758Z" user-perm="RWD"/>
   <file name="Image(31).jpg" size="185456" modified="20060422T175720Z" user-perm="RWD"/>
   <file name="Image(32).jpg" size="197944" modified="20060506T145700Z" user-perm="RWD"/>
   <file name="Image(33).jpg" size="168740" modified="20060519T232158Z" user-perm="RWD"/>
   <file name="Image(34).jpg" size="186240" modified="20060519T232316Z" user-perm="RWD"/>
   <file name="Image(35).jpg" size="148232" modified="20060506T171224Z" user-perm="RWD"/>
   <file name="Image(36).jpg" size="231132" modified="20060506T205444Z" user-perm="RWD"/>
   <file name="Image(37).jpg" size="174044" modified="20061215T011702Z" user-perm="RWD"/>
   <file name="Image(38).jpg" size="174364" modified="20061215T011728Z" user-perm="RWD"/>
   <file name="Image(39).jpg" size="169528" modified="20061215T011858Z" user-perm="RWD"/>
   <file name="Image(40).jpg" size="176332" modified="20070106T120812Z" user-perm="RWD"/>
   <file name="Image(41).jpg" size="171700" modified="20070516T183024Z" user-perm="RWD"/>
   <file name="Image(42).jpg" size="199416" modified="20070516T183102Z" user-perm="RWD"/>
   <file name="Image(43).jpg" size="172724" modified="20070711T225842Z" user-perm="RWD"/>
   <file name="Image(44).jpg" size="179000" modified="20070901T094644Z" user-perm="RWD"/>
   <file name="Image.jpg" size="206332" modified="20051009T125246Z" user-perm="RWD"/>
   <file name="Monkey.jpg" size="51842" modified="20480101T080000Z" user-perm="RWD"/>
   <file name="panorama_from_101.jpg" size="149482" modified="20480101T080000Z" user-perm="RWD"/>
   <file name="Sandy_and_collegues.jpg" size="104549" modified="20480101T080000Z" user-perm="RWD"/>
</folder-listing>done
Disconnecting...done

Although let's notice one curious thing: even though I specify '--channel 12', obexftp still says 'Channel: 10' but it still returns the correct output.

Now, trying to show the same folder from under Nautilus fails with the 'folder contents cannot be shown' error the 3rd time I try it. Conclusion: the problem lies in 'gnome-vfs-obexftp' or , ( improbable ) in Nautilus itself.

James, any hints on how to debug this? I am a C programmer, I think I could help with this...