There are a lot of variables that have not been initialed.

The local variable $edit may not have been initialized drupal6/includes form.inc line 531
The local variable $form_state may not have been initialized drupal6/modules/user user.module line 653
The local variable $form_storage may not have been initialized drupal6/modules/system system.admin.inc line 271
The local variable $info may not have been initialized drupal6/modules/color color.module line 39 1202009901372 18
The local variable $key may not have been initialized drupal6/includes common.inc line 1743 1202009901450 56
The local variable $linknid may not have been initialized drupal6/modules/search search.module line 183
The local variable $linktitle may not have been initialized drupal6/modules/search search.module line 178
The local variable $php_errormsg may not have been initialized drupal6/includes database.pgsql.inc line 33
The local variable $realm may not have been initialized drupal6/modules/openid openid.module line 128
The local variable $value1 may not have been initialized drupal6/includes common.inc line 1741
The local variable $value2 may not have been initialized drupal6/includes common.inc line 1741
The local variable $value3 may not have been initialized drupal6/includes common.inc line 1741