Opera browser and PDF doc issues

One thing I have noticed of late, and that is opening a PDF attachment when using the Opera browser causes Opera to "hang". The necessitates using the Control Manager and using End task to close it.

Am I the only one getting such issues?

(I have the latest version of Opera, and regularly check for updates. I have Adobe Reader 8)

Really. I switched not long ago. Will watch out for that. Generally speaking I've loved Opera.