5.4 is a 2.5 years old. The lastest is 6.2.http://www.scientificlinux.org/distributions/
Sage is not tested on SL (and indeed it would be next to impossibletask to do this for every Linux distro that went live in the past year, leave alone 2.5 years!)
Could you upgrade?It's likely to fix the GLIBC issue that you report.
>> Sage 4.8 complains:> (/lib64/libc.so.6: version `GLIBC_2.14' not found ).>> -Richard Vaughn>