I think it's fine as long as you are consistent, but I also think it's shooting yourself in the foot if you're too infrequent. Say, if you only update once every 3-6 months, that's quite extreme unless you upload 3 chapters at once. Even then, it'd be better to spread the releases out.
I'm fine with long update waits, but I'm also someone who binge reads, so I don't really notice delays. ^^;;