Trouble running maemo's scratchbox under Ubuntu Hardy?

I’ve been having trouble running scratchbox after upgrading to hardy. I’ve finally found some workarounds for the issues that creep up.

• For the Inconsistency detected by ld.so: rtld.c: 1192: dl_main: Assertion ‘(void *) ph->p_vaddr == _rtld_local._dl_sysinfo_dso’ failed! problem, it’s necessary to disable “vdso”:
  

  echo 0 | sudo tee /proc/sys/vm/vdso_enabled

  
  
• For problems when building packages (mmap: permission denied when building), it’s necessary to reduce the mmap minimum address:
  

  echo 4096 | sudo tee /proc/sys/vm/mmap_min_addr

  
  

Update: (Thanks to colinleroy):

...to make these changes permanent across reboots, one can add these settings to /etc/sysctl.conf:

vm.vdso_enabled = 0
vm.mmap_min_addr = 4096

Then run
sudo sysctl -p