Comment 11 for bug 137179

Same as Richard here: Updating libc6 to 2.6.1-1ubuntu10 broke stuff, doing sudo aptitude reinstall libc6 fixed it.

I do have one extra piece of info, though: I used to get memory corruption on my feisty installation before, which I got rid of by removing powernowd and any CPU core frequency changing. Since this bug is only a problem for AMD64, maybe it could be a faulty CPU series or something? Here's the top of my /proc/cpuinfo, if you want to compare:

processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 4
model name : AMD Athlon(tm) 64 Processor 3000+
stepping : 10