first of all, thanks to jetpack team. I think its a powerful plugin.
Now my history:
Before I install jetpack, I was having a blank page posting comments in my blog http://www.hornodeluna.es, Then I installed jetpack and make many test. With Jetpack installed, jetpack comments and google adsense plugin turned off I can put comments in my blog, but if I turn on jetpack comments or google adsense plugin, I have the 501 error:
Method Not Implemented
POST to /wp-comments-post.php not supported.
In other thread i read many about .htaccess problem, but i don't know exactly. I set .htaccess to the basic but the problem still continues.
Of course if I disable all the plugins there's no problem.
Someone can help me?
Thanks a lot and sorry for my English,