I have tried to quick reply a few times and it gives me an errors saying i had already posted it, but i didn't. If i do a normal reply it work. Maybe it just a problem just for today.

I had that problem yesterday. Your not alone. (posted via quick reply)

I get that error with normal replies as well sometimes.  I remember it being discussed a while ago, but I guess it never was solved.

i'm not technical, but it seems to happen whenever it feels like

Our hosts sql servers seem to be over loaded and we have a number of errors coming up here and there.  Its not with the software, it's with our host.  Which means theres not a whole lot we can do about it.  Hopefully it will clear up eventually.