We have run a database and systems check on the forum software - no problems here. But, what can happen is when your computer updates your OS or your browser...it can create some issues. This is usually a short term in-compatability.
And - if you are using any 3rd party software to post from ( such as Tap-A-Talk )there is no guarantee of compatibility long term because of how they update their program - without being able to know every permutation of where you will be browsing....