You will always want to upgrade all applications together (one of the reason why we removed that option to deselect other core applications now). If you upgrade one application but not others, the others that are not upgraded will be disabled anyway so if you're not using Gallery, I'd suggest uninstalling it.
Thank you for all the reports. This is something we're looking into. Anyone who wants to upgrade, can do so via a manual upgrade as this issue is separate from the software itself.
You can pin a topic in a forum which would have it always on top of that forum.
You could then change the color of pinned topics somehow in your theme. Theme customizations would be outside our scope of support though, Iām afraid.
I replied to your ticket which you sent in and it looks like some pages are not working on the current release your on. Please ensure that you are upgrading by going to ACP -> System -> Dashboard -> Upgrade Now.
(ACP -> System -> Smart Community, is simply an advertisement to let you know about our new features š )
Unfortunately, I am not seeing any performance issues, nor is the site down (currently). At time of writing your last post, were you having issues? Are you performing any specific actions when it goes down?