On Sun, 8 Aug 2010 13:55:28 -0700 (PDT) gagea <gagzarrei at yahoo.com> wrote: > ERROR: failed to lock directory > ‘/home/ubuntu/R/i486-pc-linux-gnu-library/2.9’ for modifying > Try removing ‘/home/ubuntu/R/i486-pc-linux-gnu-library/2.9/00LOCK’ > Are you installing from user? Perhaps try from root. Liviu