When I plug in an external USB drive, it automatically mounts and it's accesible in /media/disk/

However after a while, this is how my /media directory looks like:

cesar@minas-tirith:~$ ls /media/
0BC7-569E  0BC7-569E_  disk  disk_  disk__  disk___

As you can see, the disk entry is repeated with additional _ appended at the end. I don't know why this happens, but I can imagine that under some circumstances, the system can't mount the disk in /media/disk/ and creates disk_, then it can't mount it in /media/disk_ and creates disk__ and so forth. The other entry 0BC7-569E I think it's from a SD media card so it's not only for USB drives.

I would like to know what is causing this? Is this expected behavior? or how can I prevent this from happening?

At this time, Wubi does not work with Windows 8 default boot-loader. Thus at this point Wubi would not work on a new Windows 8 machine.

_{Citation fom WubiGuide}

Question

Recently I've learned of Wubi, a way to install Ubuntu right from Windows.

Besides installing from Windows, I would like to know key differences between a regular "alongside Windows" or Dual-boot Ubuntu installation and one done with Wubi. Are there any disadvantages (for example a performance penalty) or incompatibilities I should look out for when using Wubi?

I have a growing music collection which I manually keep in sync with an external USB drive. Sometimes I edit their ID3 tags, add or delete a file in either the hard drive or the USB drive, and I would like to keep those changes synchronized between both.

Does Ubuntu has something available that would help me with this scenario? Preferably something easy to use with a UI.

Update: To clarify my question, changes may happen on both the local hard drive or the USB drive, so the sync process must be on both directions.

I read on somewhere that Ubuntu will no longer use the familiar file size units we all know by now (kB, MB, GB, TB) and switch to a different IEC standard (KiB, MiB, GiB, TiB). If this is true, I would like to know what's the reasoning behind this change, and the impact (if any) this change has, especially with multiplatform applications or applications run with Wine.

For some reason, sometimes when I log in the top panel applets appear garbled. For instance the session applet is missing its icon, and the current username is repeated twice. This doesn't happen very often, but when it does the session applet is not responsive so I can't get to the log out menu option.

Is there any other way to log off the current user other than using the (non working) session applet?