You flashed the latest recovery through ROM Manager? And it still does not take? Did you flash 3.0.0.8 twice before rebooting into recovery?
Sent from Chucks new phone. "Flash Chuck, flash!"
In ROM Manager I select "Flash ClockWork Recovery"
It then shows me "Current Recovery: 3.0.0.8. I then hit "Reboot to recovery" and in recovery I see "Clockworkmod 2.5.1.5"
When i run the Clockwork flash from Linux i get the output
sudo sh install-recovery-linux.sh
erasing 'recovery'... FAILED (remote: not allowed)
sending 'recovery' (4290 KB)... OKAY
writing 'recovery'... FAILED (remote: not allowed)
rebooting...