I've had this problem. I'll be on my own page and have tried to post something and the previous comment just pops up again, but when I refresh it, it was like I had never posted the comment. Please help anwer my question.
It is not a matter of 30 second time limit. It has happened to me randomly. I will write a comment, it will go to a random blank page with either my comment or someone elses.
You really do just need to try again, it is just a random flub.
Firetail is right. No need to wait 30 secounds in profiles the problem you have is for sure just a random bug that inflicts sometimes, the same thing also happen when you rate a game everynow and then you will be sent back to the proviuse page without your rating going in.