Salary Cap, What's That?

Here is the list of all players in the NHL that are making over $4.5 Million this season. Why did we have a lock out again?

Forwards

Thomas Vanek, Buffalo, $10 million
Daniel Briere, Philadelphia, $10 million
Scott Gomez, N.Y. Rangers, $10 million
Jaromir Jagr, N.Y. Rangers, $8.36 million
Brad Richards, Tampa Bay, $7.8 million
Patrik Elias, New Jersey, $7.5 million
Ryan Smyth, Colorado, $7.5 million
Chris Drury, N.Y. Rangers, $7.1 million
Jarome Iginla, Calgary, $7.0 million
Marian Hossa, Atlanta, $7.0 million

Defencemen

Kimmo Timonen, Philadelphia, $8.0 million
Nicklas Lidstrom, Detroit, $7.6 million
Zdeno Chara, Boston, $7.5 million
Bryan McCabe, Toronto, $7.15 million
Ed Jovanovski, Phoenix, $7.0 million
Wade Redden, Ottawa, $6.5 million
Chris Pronger, Anaheim, $6.25 million
Sheldon Souray, Edmonton, $6.25 million
Rob Blake, Los Angeles, $6.0 million
Brian Rafalski, Detroit, $6.0 million

Goaltenders

Nikolai Khabibulin, Chicago, $6.75 million
Roberto Luongo, Vancouver, $6.5 million
Jose Theodore, Colorado, $6.0 million
Marty Turco, Dallas, $5.7 million
J.S. Giguere, Anaheim, $5.5 million
Olaf Kolzig, Washington, $5.45 million
Thomas Vokoun, Florida, $5.3 million
Martin Brodeur, New Jersey, $5.2 million
Evgeni Nabokov, San Jose, $5.0 million
Rick DiPietro, N.Y. Islanders, $4.5 million
Manny Fernandez, Boston, $4.5 million