Yesterday, while updating a 32 bit Lucid desktop using update manager, I noticed that only one of several packages listed under "Important Security Updates" was checked. I ran "Install Updates" and the one package was installed. The others were now grayed out and I could not check them. It was late so I put off investigation until today.
I am now working on my 64 bit Lucid desktop. Same thing. Only one of several packages is checked. I tried using "sudo apt-get upgrade" and received the following message:
The following packages have been kept back:
ffmpeg libavdevice52 libavfilter0 libavformat52 libpostproc51 libswscale0
I thought perhaps the packages were held back because I did not have them installed. Not so. I have these packages installed. I am at a loss. If these are important security updates, why am I not able to install them?