Summer's coming -- do you need a Sun screen? Networking giant Sun Microsystems <% if gsSubBrand = "aolsnapshot" then Response.Write("(Nasdaq: SUNW)") else Response.Write("(Nasdaq: SUNW)") end if %> has been a hot star on Wall Street. However, not all Fools agree on the company going forward.

Chris Rugaber (TMF RFK) thinks Sun will continue to shine. Meanwhile, Rob Landley (TMF Oak) keeps whistling some old "King of Pain" song by The Police -- something about "a little black spot on the Sun today."

Once you've been served by our server specialist, and voted for the side that moved you, how about a little quality home time. Let's go back six months to see how our Martha Stewart Living <% if gsSubBrand = "aolsnapshot" then Response.Write("(NYSE: MSO)") else Response.Write("(NYSE: MSO)") end if %> bout turned out in our Duel Flashback feature.

The Bull Argument... Thanks to the company's highly profitable computer systems -- its workstations, servers, and network storage products -- Sun has continued to produce tremendous revenue and profit growth. The company's slogan -- that it's the "dot" in the dot-com -- may be standard Internet hype, but for Sun there is a lot of truth to it. Continue »

The Bear Argument... As we move into a post-Microsoft world, things are changing, and Sun hasn't been moving with the times very well. Its competitors aren't offering proprietary solutions anymore; they're offering commodity open-source software like Linux and Apache, on clusters of commodity PC hardware. Continue »

The Bull Argument »

 This Week's Duel