I'm starting Selenium server with the following on a command line:

java -jar selenium-server.jar

Here is the code:

import com.thoughtworks.selenium.*;  
import java.util.regex.Pattern;  

import org.openqa.selenium.server.SeleniumServer;

import junit.framework.*;  

public class orkut extends SeleneseTestCase {   
    public void setUp() throws Exception {    
        //SeleniumServer server = new SeleniumServer();
        //server.start();


        setUp("https://www.google.com/", "*firefox C:\\Program Files (x86)\\Mozilla Firefox\\firefox.exe");   
    }  

    public void testOrkut() throws Exception {    
        selenium.setTimeout("10000");    
        selenium.open("/accounts/ServiceLogin?service=orkut&hl=en-US&rm=false&continue=http%3A%2F%2Fwww.orkut.com%2FRedirLogin%3Fmsg%3D0&cd=IN&skipvpage=true&sendvemail=false");    
        selenium.type("Email", "username");    
        selenium.type("Passwd", "password");    
        selenium.click("signIn");    
        selenium.selectFrame("orkutFrame");    
        selenium.click("link=Communities");    
        selenium.waitForPageToLoad("10000");   
        }   

    public static Test suite() {    
        return new TestSuite(orkut.class);   
        }   

    public void tearDown(){    
        selenium.stop();   
    }   

    public static void main(String args[]) {    
        junit.textui.TestRunner.run(suite());  
    }  
}

Here is the error:

.E
Time: 33.386
There was 1 error:
1) testOrkut(orkut)java.lang.RuntimeException: Could not start Selenium session:     Failed to start new browser session: Unable to delete file     C:\Users\user\AppData\Local\Temp\customProfileDir78cf02e3efca4772a71525c4a7523cac\parent.lock
at com.thoughtworks.selenium.DefaultSelenium.start(DefaultSelenium.java:89)
at com.thoughtworks.selenium.SeleneseTestBase.setUp(SeleneseTestBase.java:123)
at com.thoughtworks.selenium.SeleneseTestBase.setUp(SeleneseTestBase.java:104)
at com.thoughtworks.selenium.SeleneseTestCase.setUp(SeleneseTestCase.java:78)
at orkut.setUp(orkut.java:14)
at com.thoughtworks.selenium.SeleneseTestCase.runBare(SeleneseTestCase.java:212)
at orkut.main(orkut.java:37)
Caused by: com.thoughtworks.selenium.SeleniumException: Failed to start new browser session: Unable to delete file C:\Users\M022534\AppData\Local\Temp\customProfileDir78cf02e3efca4772a71525c4a7523cac\parent.lock
at com.thoughtworks.selenium.HttpCommandProcessor.throwAssertionFailureExceptionOrError(HttpCommandProcessor.java:97)
at com.thoughtworks.selenium.HttpCommandProcessor.doCommand(HttpCommandProcessor.java:91)
at com.thoughtworks.selenium.HttpCommandProcessor.getString(HttpCommandProcessor.java:262)
at com.thoughtworks.selenium.HttpCommandProcessor.start(HttpCommandProcessor.java:223)
at com.thoughtworks.selenium.DefaultSelenium.start(DefaultSelenium.java:81)
... 16 more

FAILURES!!!
Tests run: 1,  Failures: 0,  Errors: 1