htacess problem

for example
while i am using vbseo , i put htacess in root directory after that my sub domains dont work
what will i do to solve this problem

.htaccess files.

Code:

# Comment the following line (add '#' at the beginning)
# to disable mod_rewrite functions.
# Please note: you still need to disable the hack in
# the vBSEO control panel to stop url rewrites.
RewriteEngine On

# Some servers require the Rewritebase directive to be
# enabled (remove '#' at the beginning to activate)
# Please note: when enabled, you must include the path
# to your root vB folder (i.e. RewriteBase /forums)
#RewriteBase /
RewriteRule ^((urllist|sitemap).*\.(xml|txt)(\.gz)?)$ vbseo_sitemap/vbseo_getsitemap.php?sitemap=$1 [L]

RewriteCond %{REQUEST_FILENAME} -f
RewriteCond %{REQUEST_FILENAME} (admincp|modcp|clientscript|cpstyles|images)/
RewriteRule ^(.*)$ $1 [L]

RewriteCond %{QUERY_STRING} !vbseourl=
RewriteCond %{REQUEST_FILENAME} !chat
RewriteRule ^(.*\.php)$ vbseo.php?vbseourl=$1&%{QUERY_STRING} [L]

RewriteRule ^$ vbseo.php?vbseourl=index.php [L]
RewriteRule ^(archive/.*)$ vbseo.php?vbseourl=$1&%{QUERY_STRING} [L]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.+)$ vbseo.php?vbseourl=$1&%{QUERY_STRING} [L]

Could you provide information with regards to actually what happens to your subdomains? Do they get redirected to the root, or perhaps just dont load, continually redirecting?

** Moving thread to the Troubleshooting forums **