I've uploaded a prerelease of Nevow 0.14.3 to PyPI. This contains a fix for some Athena client-side timeout behaviour (or more specifically, the lack of one) and removes use of FilePath.getmtime.
If you are using Athena, please a) let me know! and b) give this prerelease a try to see if anything breaks. As the de facto Nevow release manager, and one of its last users, I'd like to avoid going overboard on release engineering if it isn't necessary, but I'd also like to avoid making life worse for any other remaining users, so it would be useful to hear from any of you out there still using Nevow.