Jose, please open a separate bug, as this is an entirely different problem. (I really hate Ubuntu bugs that have a generic description, because it seems to generate "Ubuntu Launchpad Syndrome" --- a problem which seems to cause users to search for bugs, see something that looks vaguely similar, and then they add a "me too" to a bug, instead of opening a new bug.)
Launchpad simply doesn't scale, and it's painful as all heck to deal with a bug with 200 comments. And this is entirely unrelated to the problem that people were dealing with --- and which has been solved in the Ubuntu kernels and in 2.6.29.
The errors you are reporting are entirely consistent with this which I found earlier in your dmesg:
[ 7.531490] EXT4-fs warning: mounting fs with errors, running e2fsck is recommended
I'm guessing you didn't set up your /etc/fstab correctly so that the filesystem on your /dev/mmcblk0p1 (i.e., your SD card) would have e2fsck run on reboot when it had errors. That would certainly be consistent with the dmesg log which you showed.
As for what caused the problem, I'm not entirely sure. One things is for sure, though --- you need to fix up your filesystem first, and I would recommend that you check out your /etc/fstab to make sure that the filesystem is checked at boot-up if it needs it. That means the fsck pass field of /etc/fstab needs to be non-zero. In any case, please open a new bug, and put a pointer in this launchpad bug to the new bug so people who are interested can follow you to the new bug. Thanks!