Hi,
Martin Zobel-Helas asked me on irc to comment on the update so here we
go. The debian-amd64 team would welcome it very much if it got
included. As you can see from the bugreport [1] the fix is included
upstream and in debian since 2.3.5-3.
The bug prevents NPTL threads from functioning correctly which is a
big issue on amd64. Most notably mysql hangs due to this.
MfG
Goswin
[1]: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=314408