Pages listied multiple times with sidebar widgets.

I’m not seeing it. What are you referring to? Where is the problem on your page?

The problem seems to be happening when you are logged in. The pages listed in the sidebar start repeating themselves multiple times. You can login using as user test and pword testing123 to view the problem.

Huh. That’s odd.

If you’re using WordPress 2.1 and up, there’s a newer version of the Widgets plugin that you should be using. Make sure you have the latest version. It can be found here: https://automattic.com/code/widgets

Also, what plugins are you running on the blog? Maybe one of them messes with the queries in an unusual way that’s not 2.1 compatible.

The problem also occurs when I turn the widgets off and I use the code <?php wp_list_pages('title_li=<h2>' . __('Pages') . '</h2>' ); ?>

I am using the following plugins when widgets are off:
* Addictions v1.0-RC2 by Joey Brooks
* Akismet v2.0 by Matt Mullenweg
* Akismet Spam Count v1.1 by Ronald Heft, Jr.
* Anti Spam Image v0.5 by Krazy Nio
* Auto-Close Comments v0.2 by Scott Hanson
* Brian’s Threaded Comments v1.5.9 by Brian Meidell
* CatCount v0.01 by Anders Holte Nielsen
* Category Icons v1.5 by Ivan Georgiev
* CharCounter v0.01 by Anders Holte Nielsen
* ComCount v0.01 by Anders Holte Nielsen
* CommentsPlugger v1.05 by Bastiaan
* Dashboard Options v1.4.3 by Chris Behm
* Exec-PHP v2.0 by S?ren Weber
* Get Recent Comments v1.5.3 by Krischan Jodies
* Gravatars2 v2.5.0 by Kip Bond
* LMB^Box Comment Quicktags v2.4 by Thomas Montague
* Last Modified v1.11 by Nick Momrik
* Maintenance Mode v2.2 by Michael Woehrer
* MsgCount v0.01 by Anders Holte Nielsen
* Post Levels v1.1b by Filipe Fortes
* Post Teaser v3.8 by Jonathan Leighton (Turnip)
* SRG Clean Archives v2.0 by Shawn Grimes
* Sideblog WordPress Plugin v3.6 by Kates Gasis
* Spam Karma 2 v2.2 r3 by dr Dave
* SpotMilk v2.0.2 by Sunghwa Park
* Spotmilk Admin Drop Menus v2.1 by Andy Staines
* Twitter updater v1.1 by Victoria Chan
* Ubernyms v2.6 by Joel Bennett
* UsrComCount v0.01 by Anders Holte Nielsen
* UsrCount v0.01 by Anders Holte Nielsen
* Viper’s Plugins Used v1.12 by Viper007Bond
* WP Dash Note vRC1 by Kirk Montgomery
* WP Grins by Alex King
* WP-ContactForm v1.3 by Ryan Duff, Firas Durri
* WP-PageNavi v2.10 by GaMerZ
* WP-Stats v2.10 by GaMerZ
* WP-Sticky v1.00 by GaMerZ
* myStatus v0.5 by Dave Kellam
* myThings v1.0 by Thomas Champion

I figured out the problem. Somehow the pages that were listed multiple times were somehow duplicated in my database. I dropped them and recreated them without further problems for now.

If you want to use PHP code directly like this, but not sacrifice the flexibility of widgets, use my ExecPHP widget. It lets you stick PHP directly into a widget box.
https://ottodestruct.com/blog/2006/04/09/fun-with-widgets/