Http status error 500

i have following code in my web.xml

<servlet>

<servlet-name>Faces Servlet</servlet-name>

<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>

<load-on-startup>1</load-on-startup>

</servlet>

<servlet-mapping>

<servlet-name>Faces Servlet</servlet-name>

<url-pattern>/faces/*</url-pattern>

</servlet-mapping>

if cahnge url pattern

<servlet>

<servlet-name>Faces Servlet</servlet-name>

<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>

<load-on-startup>1</load-on-startup>

</servlet>

<servlet-mapping>

<servlet-name>Faces Servlet</servlet-name>

<url-pattern>/*</url-pattern>

</servlet-mapping>

then i am getting http 500 error why is it so

[874 byte] By [NikisinProblema] at [2007-11-27 10:11:29]
# 1

for ex:

<servlet>

<servlet-name>Addrec</servlet-name>

<servlet-class>com.servlet.Addrec</servlet-class>

</servlet>

<!-- servlet mappings -->

<servlet-mapping>

<servlet-name>Addrec</servlet-name>

<url-pattern>/Addrec</url-pattern>

</servlet-mapping>

in yours

********

<servlet>

<servlet-name>FacesServlet</servlet-name>

<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>

<load-on-startup>1</load-on-startup>

</servlet>

<servlet-mapping>

<servlet-name>FacesServlet</servlet-name>

<url-pattern>/face/*</url-pattern>

</servlet-mapping>

then in url ../face/servletname

drvijayy2k2a at 2007-7-28 15:13:50 > top of Java-index,Enterprise & Remote Computing,Web Tier APIs...
# 2

ok but i f i change url pattern then i am getting error

<url-pattern>/face/*</url-pattern>

change to

<url-pattern>/*</url-pattern>

then getting error

NikisinProblema at 2007-7-28 15:13:50 > top of Java-index,Enterprise & Remote Computing,Web Tier APIs...