Still waiting on big secret how up Lancelot 1 Ghs. Iam still in war with v 42 uhm.
No secrets at all, with V42 firmware the increase is about 10% on the number of shares, so don't expect nothing more 440 MH/s (about 460-500 including hw errors).
The 1GH/s display is a wrong value on Cgminer, and is caused by the variable speed of the Lancelot with this new firmware

Yes, i know. Think its little bit more.