Are there any known issues with memory leaks with the GW8.0.1 client?

I've found that after 3-4 hours run-time the client has consumed 256MB+ and starts hogging the CPU. Restarting the client seems to resolve the issue. Prior to using the 8.0.1 client I was could run the 7.0.3 client for days on end without a problem.

Any help appreciated!