Installed the 8259 snapshot for 10.0 on x86-64 and found two problems:
- I see the machine freezing (when using the desktop -- nv driver)
- Starting ntpd, you immediately get
  peth0: received packet with  own address as source address
ntpd[24019] bad frame in sigreturn frame:00007fffffd85058 rip:2aaaaaecdd35 rsp:7fffffd854a8 orax:ffffffffffffffff
  and the process dies with
  select(8, [4 5 6 7], NULL, NULL, NULL)  = ? ERESTARTNOHAND (To be restarted)
  --- SIGALRM (Alarm clock) @ 0 (0) ---
  rt_sigreturn(0xe)                       = 0
  --- SIGSEGV (Segmentation fault) @ 0 (0) ---
  Process 24019 detached

As I have seen invalid frames from X in the logs, the lockups could be related
to the same underlying problem, thus the mentioning in one report.