Won't appear on desktop/iTunes, but shows in System Profiler as connected

Question

Hope someone can help... I've been through all the steps. My Nano is connected, charging etc. But I've tried with two computers and although it shows up in the System Profiler as connected to my USB port, it will not show up on the desktop or in iTunes. I've tried resetting. The cable and ports are obviously fine because it IS connected. Does anyone have any ideas?
Thank you!

Answer 1

OK. For the record, the iPod is playing fine. I listened to it for over an hour yesterday. Still not being recognized by iTunes on any of my 3 computers, or showing up on the desktop. But system profiler shows it connected, and today I went to Disk Utility. This is what happened:
+Apr 3 19:13:48: Disk Utility started.+
+Verifying volume “Laurie’s iPodNano”+
+Checking HFS Plus volume.+
+Checking Extents Overflow file.+
+Checking Catalog file.+
+Invalid key length+
+The volume Laurie’s iPodNano needs to be repaired.+
+Error: The underlying task reported failure on exit+
+Disk Utility stopped verifying “Laurie’s iPodNano” because the following error was encountered:+
+The underlying task reported failure on exit+
+1 HFS volume checked+
+ Volume needs repair+
+Verify and Repair disk “Laurie’s iPodNano”+
+Checking HFS Plus volume.+
+Checking Extents Overflow file.+
+Checking Catalog file.+
+Invalid key length+
+Volume check failed.+
+Error: The underlying task reported failure on exit+
+Disk Utility stopped repairing “Laurie’s iPodNano” because the following error was encountered:+
+The underlying task reported failure on exit+
+1 HFS volume checked+
+ 1 volume could not be repaired because of an error+
So does anyone know what this means? It seems to me that I now have an iPod which will be fine for listening to the music already on it, but I won't be able to add or change anything on it. Which means I have to spring for another one. I only bought this one (refurbished, now I think I know why...) in 1/07.