I don't use Impulse.
I opened SDC for the first time in a while, no updates. Rebooted my laptop, and my systray icons have gone!
Installed SDC but I'm only seeing a beta version from 10/5/2007 1.90i[b].020.
same here, which is the one I've had installed with no problems until now, though if I click 'About OD' I get 1.90a ( 538u )
I haven't updated anything from SDC, so I'm wondering about some weird type of timestamp that's messing things up. Can't be bothered to re-install at the moment.
Running Vista Enterprise SP1