Hi MrCharlie, I've tried Spycatcher, Spybot, AdAware, etc. Nothing touched the "about:blank" disease. We remembered the approximate date when it appeared on the computer, and used the Restore procedure. We chose a date at least a week before the disease appeared. Presto ! It worked ! All email functions work normally. The only problem was we had to update several applications (AVG anti-virus, and others), and re-install a couple of programs. The library computer uses a local WiFi system that is not secure, and I suspect that is how we got infected. We'll watch carefully. Thanks for your suggestions, --Bill