Hello, It is possible that nothing is wrong and that your computer system was doing a forced fsck; UBUNTU decided to remove the notification, so you have no idea at the time why the system looks like it froze or something like that. The computer will do this procedure every 30 boots, did you restart your system this many times? Depending on your computer and the size of the HD, it may take awhile to complete the fsck. Below is a recent HOW TO from JohnnyG. Yesterday I thought my computer was going down the tubes, but then it finished booting up and then I seen the post below from JohnnyG. Bingo mine did a fsck check at that startup but I couldn't tell since UBUNTU remove the notificiation! I know they wanted to speed up the boot process but I wonder how many people try to restart the computers when this happens??
How to check for next forced fsck
New postby JOHNNYG » Sun Jan 24, 2010 4:20 pm
Hey all ! you Know that sinking feeling you get when you fire up your rig and it gets so far and hangs,
only to find that fsck is being forced !!
Well here is a way to check and see how many boots till next forced fsck
Install showfsck in Ubuntu
sudo apt-get install showfsck
This will complete the installation
Using showfsck
If you want to see the number of reboots before next forced fsck using the following command
sudo showfsck
output looks similar to the following
15/30 mount(s) until fsck for /dev/disk/by-uuid/edadb298-aae6-4549-b5dc-55c6184fdbc4