Ever since I upgraded to Leopard, OmniWeb has been pegging the CPU at about an average of 10% while idle. It didn't do this under Tiger, and is now causing my battery to drain quicker when OW is running. Have others experienced this, and is there any sort of workaround or solution?

I have a 17" Core 2 Duo MacBook Pro (2.33 GHz, ATI graphics), if that helps. No APE, no third-party kexts save those from Steermouse and VMware.