Don't recreate OS object everytime

src/com/sheepit/client/os/OS.java

@@ -25,6 +25,8 @@ import java.util.Map;
 import com.sheepit.client.hardware.cpu.CPU;
 
 public abstract class OS {
+	private static OS instance = null;
+	
 	public abstract String name();
 	
 	public abstract CPU getCPU();
@@ -59,21 +61,22 @@ public abstract class OS {
 	}
 	
 	public static OS getOS() {
+		if (instance == null) {
 			String os = System.getProperty("os.name").toLowerCase();
 			if (os.contains("win")) {
-			return new Windows();
+				instance = new Windows();
 			}
 			else if (os.contains("mac")) {
-			return new Mac();
+				instance = new Mac();
 			}
 			else if (os.contains("nix") || os.contains("nux")) {
-			return new Linux();
+				instance = new Linux();
 			}
 			else if (os.contains("freebsd")) {
-			return new FreeBSD();
+				instance = new FreeBSD();
-		}
-		else {
-			return null;
 			}
 		}
+		
+		return instance;
+	}
 }