Forum posting doesn't work well on some browsers

When browsing in Firefox 3.6.x often the cursor doesn't show up in the text area. It's possible to type then, but it's impossible to set the mouse location using either the mouse, arrow keys or other keys (like 'home). Switching to 'source mode' works. Currently I'm actually getting a cursor, though typing is a bit slow.

Using Opera on my phone I can't even select the text area now, so it's impossible to get the keyboard and type anything. Even the toolbars don't show correctly. Not long ago it was possible to post and I even posted a message or two from my phone.