Firefox starts unintentionally

Recently, I installed Snow Leopard on my MacBook Pro 15" and encountered a strange behavior. When I was installing Nokia WRT extension for Adobe Dreamweaver CS4 via the extension manager, Firefox suddenly started itself and pointed to a non-existing page
http://www.diamond.com/calendarobject/description.htm
May I ask whether this is some kind of "virus"? Is this problem rooted in the operating system, Firefox or Adobe CS4?
Thanks very much.

Hello a:
Welcome to Apple discussions.
I do not know what caused the issue you describe, but you can safely rule out a virus. There are NO documented viruses that affect a Mac running OS X - none.
Something in the software you mentioned somehow caused Firefox to start, I think.
Barry

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Firefox starts unintentionally

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