encode email gives errors with IE7

After upgrading to EE 1.6.7 I have problems with the {encode="[email protected]" title="text"} clause.

IE7 stops after the decoding. It tries to downlaod a non-existing image from the non-existing subdirectory /images/layout/body_v.png

Firefox is OK. In the source I can see the insertion of an ID and after de coded email: document.getElementById(‘eeEncEmail_uNEZGI40TD’)[removed] = output; I cannot remember that from ealier versions.

That could be responsable … or not?

What to do? Downgrade to 1.6.6?