Howdi,
Basically as question says;
Download and Install Cyanogenmod 7.1.0 from ROMManager App, reboot into system recovery, and lo and behold
E:failed to verify whole-file signature
E:signature verification failed
Installation aborted.
Also tried with the 'standard' download from the website instead of OTA, same issue even after verifying md5 hash
Anyone got any ideas?