Seeing this about once per day in SbS 7.6. Not sure what, if any, user action causes it or what effect it has.

Code:
[10-04-08 09:18:53.3083] Slim::Networking::IO::Select::__ANON__ (146) Error: Select task failed calling Slim::Networking::Async::HTTP::_http_read_body: illegal file descriptor or filehandle (either no attached file descriptor or illegal value):  at /usr/share/perl5/Slim/Networking/IO/Select.pm line 149.; fh=Slim::Networking::Async::Socket::HTTP=GLOB(0x37dee78)