How to avoid DNS problems with Apache

[ez2c]

Use IP addresses in <VirtualHost>, use IP addresses in Listen, use IP addresses in BindAddress, ensure all virtual hosts have an explicit ServerName, and create a <VirtualHost default:*> server that has no pages to serve.

[allon]

Do you think that it would have problems if we tray to set every sub-folder under a directory as a sub-domain?
And would you know how it can be done?

[geek from above]

Does your subdomains not working have to do with DNS problems? Do you have any ideas what it might be?