when I run fglrx or glxinfo I get the following error

X Error of failed request: BadAlloc (insufficient resources for operation)
Major opcode of failed request: 143 (GLX)
Minor opcode of failed request: 3 (X_GLXCreateContext)
Serial number of failed request: 19
Current serial number in output stream: 20

????What does it mean and how do I fix it

Thanks

DOCMUR