DOS in progress ?

Are folks seeing any major DOS in progress ?

Twitter seems to be under one and FB is flaky.

Follow-Ups:
- DOS in progress ?
  - From: sjk at sleepycatz.com (sjk)
- DOS in progress ?
  - From: ge at linuxbox.org (Gadi Evron)
- DOS in progress ?
  - From: chris at uplogon.com (Chris Gotstein)
- DOS in progress ?
  - From: ken.gilmour at gmail.com (Ken Gilmour)
- DOS in progress ?
  - From: tme at americafree.tv (Marshall Eubanks)
- Botnet hunting resources (was: Re: DOS in progress ?)
  - From: lsc at prgmr.com (Luke S Crawford)