Plesk 8.3 (CENTOS 4) not all sites loading after migration

[law]

Hi

I migrated about 25 websites from Plesk 7.5 to Plesk 8.3. Noticed that some sites are not loading, takes a very long time to bring up the default server parked page.

Have checked the following
1. DNS is correct and propagated
2. Tried to type in specific address www.domain.com/filename
3. Check file permissions
4. httpd.include exists and looks correct
5. Tried to remove the domain, recreate manually and FTP files, same result...
6. Restarted apache (/etc/rc.d/init.d/httpd restart)
7. Mail is being delivered for all the migrated domains
8. Server load is fine (average idle 97.96%)
9. Doesn't seem to matter whether sites have PHP code or not

All the other sites (existing before migration) are loading perfectly

Any assistance would be greatly appreciated!

[law]

The problem was that the httpd.include file didn't have a ServerAlias www.domianname entry. Strange that only some of these migrated files didn't contain this entry...