User who use a Sony Ericsson T610 must modify 1 line of source code to get a correct folder listing, as describe in the ObexTool-forum message http://www.tech-edv.co.at/vcms/node.php?id=41&cid=98#98
Maybe this applies also to other models of this manufacturer.
Sony Ericsson users also must deactivate the memory status feature, because this only works on Siemens phones - details see: http://www.tech-edv.co.at/vcms/node.php?id=41&cid=89#89