I tried both my 8gb (24/96) from transmeta and my 4gb (24/44.1) from lexar in the fr2le, and my iriver (via the ua-5), same results
Also, I didn't specify it, but I have a dualy cable (5pin > 2 XLR), so issues in both channels (since they run in the same enclosure) shouldn't be an anomoly if something physical is wrong.
I havn't seen it before since I never run the gain and trim at full blast, so I don't know if having stuff at the -50db-ish range (after gain on full) is normal line noise, or what it is.