[ger]

So much for that theory. I just tried the following:

<Page AbsorbsInput="false" Location="8,62" Name="SpellsPage" OnShow="Loop.Press=true" ScrollExtent="570,367" Size="570,367">
<Button Name="Loop" OnPress="Entry0.Name.Text=Entry0.Icon.Tooltip
    Entry1.Name.Text=Entry1.Icon.Tooltip
    Entry2.Name.Text=Entry2.Icon.Tooltip
    Entry3.Name.Text=Entry3.Icon.Tooltip
    Entry4.Name.Text=Entry4.Icon.Tooltip
    Entry5.Name.Text=Entry5.Icon.Tooltip
    Entry6.Name.Text=Entry6.Icon.Tooltip
    Entry7.Name.Text=Entry7.Icon.Tooltip
    Entry8.Name.Text=Entry8.Icon.Tooltip
    Entry9.Name.Text=Entry9.Icon.Tooltip
    Entry10.Name.Text=Entry10.Icon.Tooltip
    Entry11.Name.Text=Entry11.Icon.Tooltip
    Entry12.Name.Text=Entry12.Icon.Tooltip
    Entry13.Name.Text=Entry13.Icon.Tooltip
    Entry14.Name.Text=Entry14.Icon.Tooltip
    Entry15.Name.Text=Entry15.Icon.Tooltip
    Press=Parent.Visible" ScrollExtent="1,1" Size="1,1" Visible="false"></Button>
{Other usual spell page stuff}
</Page>

The second I clicked the 'Spells' tab in my Knowledge window my game froze. About 15 seconds later it crashed silently to the desktop. So it seems we'll neither bring the servers nor the client machines to their knees, just the client application.