FULL PRODUCT VERSION :
java version "1.5.0_07"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_07-b03)
Java HotSpot(TM) Client VM (build 1.5.0_07-b03, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
My program tries to use com.sun.deploy.net.proxy.* classes to get a proxy from PAC file (Proxy Auto Config).
I find performance degradation when getProxyInfo() is called repeatedly.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the sample progam, with jre\lib\deploy.jar in classpath
Passing a PAC URL
java TestProxyHandler http://somehost/somepac.pac http://java.sun.com

The PAC file "somepac.pac" could be as simple as

function FindProxyForURL(url, host)
{
return "DIRECT";
}

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
In the source code, the time spent in calling getProxyInfo() in WIExplorerAutoProxyHandler.java is logged.
This method is called repeatedly (like running a load test).

The expected result is the time spent in the getProxyInfo() function should be more or less the same no matter how many times the function is called.
ACTUAL -
The time spent in the getProxyInfo() function is increasing from a few milliseconds to more than a second after thousands of calls.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.net.URL;

import com.sun.deploy.net.proxy.BrowserProxyInfo;
import com.sun.deploy.net.proxy.ProxyHandler;
import com.sun.deploy.net.proxy.ProxyInfo;
import com.sun.deploy.net.proxy.ProxyType;
import com.sun.deploy.services.PlatformType;
import com.sun.deploy.services.ServiceManager;

public class TestProxyHandler {
    private ProxyHandler proxyHandler = null;

    private BrowserProxyInfo browserproxyinfo;

    private static int osType;

    static {
        osType = (System.getProperty("os.name").indexOf("Windows") != -1) ? PlatformType.STANDALONE_TIGER_WIN32 : PlatformType.STANDALONE_TIGER_UNIX;
    }

    public TestProxyHandler(String pacUrl, String url) throws Exception {
        if (url != null && url.trim().length() > 0) {
            ServiceManager.setService(osType);
            proxyHandler = ServiceManager.getService().getAutoProxyHandler();

            if (proxyHandler != null) {
                browserproxyinfo = new BrowserProxyInfo();
                browserproxyinfo.setAutoConfigURL(pacUrl);
                browserproxyinfo.setType(ProxyType.AUTO);
                proxyHandler.init(browserproxyinfo);

                while (true) {
                    long startTime = System.currentTimeMillis();
                    ProxyInfo[] pis = proxyHandler.getProxyInfo(new URL(url));
                    System.out.println(System.currentTimeMillis() - startTime);
                    for (ProxyInfo pi : pis) {
                        String httpHost = pi.getProxy();
                        int httpPort = pi.getPort();
                        System.out.println(httpHost + ":" + httpPort);
                    }
                }
            }
        }
    }

    public static void main(String[] args) {
        if (args.length != 2) {
            System.out.println("usage: java TestProxyHandler [PAC url] [url]");
            return;
        }

        try {
            new TestProxyHandler(args[0], args[1]);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

---------- END SOURCE ----------