Hi jinja1,
The 023 seems to be persistant. To remove it:
Click Start>Run.
Type in services.msc.
Scroll down till you find a entry with Hardware Clock Driver as its Display Name.
Right-click it and select Stop.
Double click that entry and under the General tab, select Disabled under "Startup type:".
Click Ok.
Open HijackThis.
Click the Config button.
Click the Misc Tools button.
Select Delete an NT service.
Copy and paste the following into the box:hwclock
Click Ok.
Then, reboot and post a fresh HijackThis log.