Some time between the last time I was on here last week and today, something's changed and all of the dropdown menus on the forum pages have stopped working/doing anything when other values are selected - for example, I can't show any number of threads other than the default, 20.

I'm using IE6.  I'm sure this isn't an issue on other browsers (or somebody else would have started a thread by now) and I realise that the obvious solution is to use a better browser, but I won't bore you with the reasons I am constrained into using only IE6.  Suffice it to say this is what I've got and I need to make it work.

If it helps, IE throws me this error when I'm looking at the NetBackup forum: