Unable to connect to http://127.0.0.1:8080/apex/

Yes.  I'm copying all the LNSRCTL output:

LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 06-AUG-2009 23:55:51
Copyright (c) 1991, 2005, Oracle.  All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC_FOR_XE)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Produ
ction
Start Date                06-AUG-2009 23:46:08
Uptime                    0 days 0 hr. 9 min. 43 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Default Service           XE
Listener Parameter File   C:\oraclexe\app\oracle\product\10.2.0\server\network\a
dmin\listener.ora
Listener Log File         C:\oraclexe\app\oracle\product\10.2.0\server\network\l
og\listener.log
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC_FOR_XEipc)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=JKLT)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=8080))(Presentation=
HTTP)(Session=RAW))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
  Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "PLSExtProc" has 1 instance(s).
  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "XEXDB" has 1 instance(s).
  Instance "xe", status READY, has 1 handler(s) for this service...
Service "XE_XPT" has 1 instance(s).
  Instance "xe", status READY, has 1 handler(s) for this service...
Service "xe" has 1 instance(s).
  Instance "xe", status READY, has 1 handler(s) for this service...
The command completed successfully

To enable Oracle XML DB HTTP server:
connect sys/pasw@orcl as sysdba
EXEC DBMS_XDB.SETHTTPPORT(8080);
COMMIT;

To disable Oracle XML DB HTTP server:
EXEC DBMS_XDB.SETHTTPPORT(0);
COMMIT;


2.To configure the embedded PL/SQL gateway:
 
@ ?/apex/apxconf

login as: oracle
oracle@oralin1.bg.icw.int's password:
Last login: Fri May  9 17:22:21 2008 from shvertner.bg.icw.int
[oracle@oralin1 ~]$ mc

[oracle@oralin1 u03]$ sqlplus /nolog

SQL*Plus: Release 11.1.0.6.0 - Production on Sat May 10 12:20:23 2008

Copyright (c) 1982, 2007, Oracle.  All rights reserved.

SQL> connect sys/reksreks@bugf as sysdba
Connected.
SQL> @ ?/apex/apxconf

      PORT
----------
      8080

Enter values below for the XDB HTTP listener port and the password for the Application Express ADMIN user.
Default values are in brackets [ ].
Press Enter to accept the default value.


Enter a password for the ADMIN user              [] reksreks
Enter a port for the XDB HTTP listener [      8080]
...changing HTTP Port

PL/SQL procedure successfully completed.


PL/SQL procedure successfully completed.


Session altered.

...changing password for ADMIN

PL/SQL procedure successfully completed.


Commit complete.

SQL>


3.Unlock the ANONYMOUS account:

SQL> ALTER USER ANONYMOUS ACCOUNT UNLOCK;

User altered.

SQL>


4. Access Oracle Application Express

http://oralin1:8080/apex

http://oralin1:8080/apex/apex_admin   ----> Administrator Page

Administrator Page:
User: admin
pass: reksreks

Version: Application Express 3.0.1.00.08

Your listener setup shows you've already got the http port set, so you can skip step (1) above it's obviously already done

Since you're got XE,  the apxconf  (2) doesn't apply.

steps (3) should already be done out of the box in XE
but, even if anonymous is locked, your web page should still appear

step 4 - this is where you are, however XE's APEX version should only be 2.1.0.00.39 initially but you can upgrade it afterward.

Were there any errors or other messages while installing?  I just did a fresh install on an XP box with no extra steps taken, just clicked through the wizard and 127.0.0.1:8080 opened up just fine when done.  Maybe you should reinstall

also on step 4 -
http://127.0.0.1:8080/apex/apex_admin    -  this doesn't exist in the default apex configuration with XE.

My Notes are for Oracle 11g Enterprise Edition.
It is inlikely to use AppEx using XE database
even the experiments and development is done
on such DB.

Run from the command prompt:
netstat -a

to see  if anything is on port 8080

If you have a firewall enabled, either add 8080 to its exception or just plain disable it temporarily

Is there anything listed under sqlnet.log ?

I will agree with sdstuber, if nothing suggested so far is helping, just do a clean reinstall. Most times it's simpler to do that than debugging.

I've reinstalled but get the same results.  There are no errors during installation.  I've confirmed in Control Panel that my user account is in the ORA_DBA group.

I turned off the Windows firewall and the McAfee firewall as well, but still can't get access - "Access Denied:  Access control configuration prevents your request from being allowed at this time"