[ale] Document contains no data

I get this: *The document* *contains* *no* *data *in mozilla/firefox 
when I am surfing the web. How do I get rid of this annoying problem?

Follow-Ups:
- [ale] Document contains no data
  - From: ale at accipiter.org (Christopher R. Curzio)
- [ale] Document contains no data
  - From: pete.hardie at gmail.com (Pete Hardie)
- [ale] Document contains no data
  - From: jimpop at yahoo.com (Jim Popovitch)
- [ale] Document contains no data
  - From: esoteric at 3times25.net (Geoffrey)
- [ale] Document contains no data
  - From: Dow.Hurst at mindspring.com (Dow Hurst)