I freshly installed ubuntu 13.04 on my Windows 8 PC. Dual booting it, I created a symbolic link while on ubuntu to my windows based Dropbox directory. The link worked fine while the computer was still on. I shut it down normally with a full shut down and when I turned it back on and it booted automatically into ubuntu, it didn't work anymore. I could no longer read the windows partitions and the link wasn't working. The error message I got said that it was because Windows was not shut down properly. I rebooted into windows and turned it off again to test it, but it didn't work.
Any ideas what went wrong?