By default, crossdev uses the latest unstable packages of gcc, glibc, 
etc, which are likely to break.

To emerge the stable versions instead, see crossdev -h for options.

Example:

crossdev --b 2.16.1-r3 --g 3.4.6-r1 --k 2.6.11-r2 --l 2.3.6-r4 -t 
i686-pc-linux-gnu