What does this mean? How do I correct it? nisse@p-nisse:~$ lyx lyx: relocation error: lyx: symbol _ZNSt9basic_iosIcSt11char_traitsIcEE4initEPSt15basic_streambufIcS1_E, version GLIBCPP_3.2 not defined in file libstdc++.so.5 with link time reference /nisse