I currently have a set of Bose Companion 5 speakers hooked up to my IMAC and sometimes they work sometimes they dont...Im not sure what the issue is or if its user error but ill be listening to itunes or youtube and they will just stop putting any audio out without notice and wont turn back on again unless i reset the computer or the speakers...and that doesnt always work. Hopefully i dont have a short somewhere. Has anyone else had this problem?? Thanks!