There are no Mac viruses and it's not malware. Repairing disk permissions, uninstalling then reinstalling Flash, using OpenDNS... and possibly removing you ad blocker
should make a difference.
Uninstall then reinstall the newest version of Flash.
Install Flash 10.1
Now repair disk permissions...
Launch Disk Utility. (Applications/Utilities) Select MacintoshHD in the panel on the left, select the FirstAid tab. Click: Repair Disk Permissions. When it's finished from the Menu Bar, Quit Disk Utility and restart your Mac. If you see a long list of "messages" in the permissions window, it's ok. That can be ignored. As long as you see, "Permissions Repair Complete" when it's finished... you're done. Quit Disk Utility and restart your Mac.
Also, from the Safari Menu Bar click Safari/Preferences, select the Security tab. Click Show Cookies. Delete the cookies related to the sites you have trouble accessing. Relaunch Safari.
You can avoid redirects by using
Open DNS - Free/Basic
And your ad blocker may be causing incompatibility issues after updating to Safari 5. Check the vendor site for help to uninstall it. Relaunch Safari.
Message was edited by: Carolyn Samit