Yes, s.tlk is right. It's not a problem with vB. At least not directly. Does the problem still exist?
And if yes, could you please do as s-tlk and I asked and try other pages? So we can find out if it is server specific or something else.

@s-tlk: Yes, I know what you mean. That sometimes happens when I backup the database and webspace. It's not directly vB's fault but rather the server's.
At the weekends there is a lot of traffic on our server so that might cause some slight lags. But as far as I know it's nothing that keeps the site from running.
Apart from that, Lea has been doing great since last year. Thank God! The board is finally on a good way.