When I give that command it tells:
-rw-r--r-- 1 root root 13 feb 4 00:13 /usr/lib/libGl.so.1
so it seems libGl.so is gone...
but when I browse with Konquer it tells me that libGl.so has 0kb. and the properties of that files
says they're linked to libGl.so.1.2 in a different directory