I'm using Wordpress 3.1.1 and recently reorganized my page (deleted and moved a lot of pages). Now I get 404-errors when accessing some pages (all posts and tags work fine).

I can disable the permalinks and then access all pages without problems. I can also rename the pages (e.g. contact --> contact1) and all links work again for the new names. However, if I rename them back, I get the same 404 error again. It seems like some kind of caching-problem. Any ideas how to fix it? Thanks!

My .htaccess for the root directory:

```
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

```