急：jsp换个机器就报Untrusted Server Certificate Chain错误是怎么回事？

我在一台机器上做好jsp，需要调用C:\j2sdk1.4.2_12\jre\lib\ext\下的几个jar包（commons-logging-api-1.1.jar、commons-httpclient-3.0.1.jar、commons-codec-1.3.jar、commons-logging-1.1.jar）。这几个包也都放到位了，在开发的机器上运行时没问题，能在IE中显示正确结果，但是换台机器把该用的jsp文件和jar包都复制到同样位置，就是不能执行，报以下错误：
type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception javax.net.ssl.SSLHandshakeException: java.security.cert.CertificateException: Untrusted Server Certificate Chain
com.sun.net.ssl.internal.ssl.BaseSSLSocketImpl.a(DashoA12275)
com.sun.net.ssl.internal.ssl.SSLSocketImpl.a(DashoA12275)
com.sun.net.ssl.internal.ssl.SSLSocketImpl.a(DashoA12275)
com.sun.net.ssl.internal.ssl.SunJSSE_az.a(DashoA12275)
com.sun.net.ssl.internal.ssl.SunJSSE_az.a(DashoA12275)
com.sun.net.ssl.internal.ssl.SunJSSE_ax.a(DashoA12275)
com.sun.net.ssl.internal.ssl.SSLSocketImpl.a(DashoA12275)
com.sun.net.ssl.internal.ssl.SSLSocketImpl.j(DashoA12275)
com.sun.net.ssl.internal.ssl.SSLSocketImpl.a(DashoA12275)
com.sun.net.ssl.internal.ssl.AppOutputStream.write(DashoA12275)
java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:66)
java.io.BufferedOutputStream.flush(BufferedOutputStream.java:124)
org.apache.commons.httpclient.methods.EntityEnclosingMethod.writeRequestBody(EntityEnclosingMethod.java:502)
org.apache.commons.httpclient.HttpMethodBase.writeRequest(HttpMethodBase.java:1973)
org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.java:993)
org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:397)
org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:170)
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:396)
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:324)
com.icbc.SSL.B2BOrderQuery.QueryOrder(b2borderquery.java:95)
org.apache.jsp.test.b2b.b2bqueryorder_jsp._jspService(b2bqueryorder_jsp.java:78)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.两台机器软件环境基本相同，都是xp+j2sdk1.4.2_12+tomcat5.0.28，能正常运行的机器上装防病毒软件officescan，不能运行的机器上装瑞星，此外没什么区别了。
应该是环境配置原因吧！谁能告诉这是为什么？怎么改？