Just to confirm that Sven is not alone, I was hit by the same bug.
- Bug#629534: libc6: Dynamic linker assertion failed after ... Sven-Haegar Koch
- Bug#629534: libc6: Dynamic linker assertion failed a... Jonathan Nieder
- Bug#629534: libc6: Dynamic linker assertion fail... Sven-Haegar Koch
- Bug#629534: libc6: Dynamic linker assertion failed a... Dima
- Bug#629534: libc6: Dynamic linker assertion failed a... Atte Timonen