Maybe it only happens for mobile browsers, but searching keeps giving me the 'search flood control enabled, wait 5 seconds' even after waiting like 30 seconds, or even few minutes later (same for view new posts when I first logged in today, so after like 24h). Didn't notice it being that painful from desktop, though did have issue going back to 'view new posts' page once or twice, so it also seems to have some anti-caching code which forces the browser to reload it even when going 'back'
