Wow that sounds pretty bad. I am sure this also makes the small rewards you can make here on Steemit a much bigger deal.

By the way, this was another double post - you can use busy.org to do all the same things you do here on steemit.com (it is based on the same blockchain, you can post to steemit, upvote, resteem, etc. - it has 100% of the functionality of Steemit.com) but busy.org has never experienced these transaction broadcast errors.

Alternatively I can also tell you that when you experience a transaction broadcast error and it returns you to the post editor when you try to submit a post, it is almost always the case that the post actually did go through. If you experience the error, bring up your blog in another tab and check to see if the post actually posted.

Cheers and good luck in Venezuela! - Carl