What can be causing blank pages on download at TechRepublic.

System Ninja 1.4.1
unetbootin 240 (embedded URL in Clonzilla article)
Registry Cleaner Free 2.1.6.8 (Windows)
have all spawned a blank page either as a new tab or a new window. No download starts. Other downloads from other articles are normal ?????

Firefox 3.6.9