Hi,
I recently ran into a bug when templates have more than 10 conditionals. I’m using EE 1.6.9, but I checked the code for 1.7.0 and it doesn’t look like it’s fixed.
I submitted a bug report, including a test case and patch. It appeared to submit fine but the page comes up blank. See https://support.ellislab.com/bugs/detail/14707/
So I guess I triggered a bug in your bug tracker too! Anyway, I just wanted to write here and let you know.