SharePoint:Adding template to the subsites

Issue:

Some days back i have not seen the Publising site template in the Template selection in the subsite

Resolution:

If you want to see the templates that are available in sitecollection in the subsites you nee to do this:

Check your WEBTEMP.XML file under \12\TEMPLATE\1033\XML folder.
Most probably templates you'd like to see are set to Hidden="TRUE". Make them false.

or

If your site is a publishing site, go to Page Layout and Site Templates Settings and add the templates that you want your subsites to use.
(Site Actions > Site Settings > Modify All Site Settings > Look and Feel > Page layouts and site templates)