WordPress MU

I've another problem. On my wordpress mu site, blogpadania.net, every page I load is very very slow. For any seconds the browser "is stilling blogpadania.net", then the site is loaded in one shot.
I'm sure it isn't a server problem.
My htaccess is so:

RewriteEngine On
RewriteBase /

#uploaded files
RewriteRule ^(.*/)?files/$ index.php [L]
RewriteCond %{REQUEST_URI} !.*wp-content/plugins.*
RewriteRule ^(.*/)?files/(.*) wp-content/blogs.php?file=$2 [L]

# add a trailing slash to /wp-admin
RewriteCond %{REQUEST_URI} ^.*/wp-admin$
RewriteRule ^(.+)$ /$1/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule . - [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-.*) $2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
RewriteRule . index.php [L]

<IfModule mod_security.c>
<Files async-upload.php>
SecFilterEngine Off
SecFilterScanPOST Off
</Files>
</IfModule>

Poking around the site loads the pages fine for me. Usually under three seconds or so.

Anything in the error logs? Specifics help.

Can you describe your server setup and how you;ve got your mu installed? Again, specifics help.

You may want to take a few moments and read thru the debugging page linked to from the readme file. Both of those are listed as items that you should be including when asking for assistance along with specific examples of where within your site things are going slowly.

Dear Experts,
I am new at wordpress and created my website by using wordpress script. My problem is that, my website is slow at the time of loading. I am so confused. Please help

sprabhu, did you read tdjcbe's post above?