Every Steam startup I get this message:
Steam needs to install these additional packages:
libgl1-mesa-dri:i386, libgl-mesa-glx:i386, libc6:i386 (= 10.1.3-oubuntu0.4)

And then this:
Some packages could not be installed. This may mean taht you have requested an impossible situation or if you using the unstable distribution that some required packages have not yet been created or been moved out of incoming.
The following may help to resolve the situation:

The following packages have unmet dependencies:
libgl-mesa-glx:i386 Depends: libglapi-mesa:i386 (= 10.1.3-oubuntu0.4)
E:Unable to correct problems, you have held broken packages.

What can I do??? Please help!!

Linux beginner