I have a code that makes a contour and then draws the colorbar. When I run the code on  IRIX machine with idl 5.3, the result looks great. But when I run it on the linux server with idl 6.2 or idl 7.0, the colorbar is partially covered by the contour. In another case, the arrows can't show up at the contour area when run on Linux, but show up when run on IRIX. Is this a problem caused by the new version of IDL? Or is it a problem with Linux? Would anybody help me fix the problem? Thanks a lot!