When you enter a previously used e-mail name as your new SqueezeNetwork account, the error string that's displayed is this:

"The e-mail address 'xxyyxx' has already been registered. Please try a different address." (String #1)

In English, everything looks OK. But for languages such as German or Danish this string runs into this string:

"Once your account is created, we'll help you connect your Squeezebox and Transporter music players to SqueezeNetwork." (String #2)

That's because this String #2 uses 3 lines in these languages, where in English it's only 2 lines.

I suspect the solution might be to rearrange this window to allow String 2 and String 1 to be displayed in the window together without looking yuck.