On Mon, 18 Jan 2010, Søren Holm wrote: > i686 > angstrom.2008.1 > glibc must be 2.9 since I have not enforced anythin else. OK, something must be broken there... glibc on i686 2.9 definitely has TLS. Which version of xserver-xorg? It also inherits glx-use-tls, so _glapi_tls_Context should be there if you've rebuilt since August 24. Mike