It sounds like you're trying to modify the title of the page (as opposed to the banner title). If I'm right, you're modifying the index.tpl. In that case, {$entry} is the most recently modified entry: the last one.
Unfortunately, the complete entries array is sorted by dategroup, with sticky entries on top. So the easy way -- pulling the first dategroup out of the entries and using its title -- will get you the sticky entry instead of the newest entry. This will only happen on pages like the front page, where multiple entries are displayed.
Then again, on those pages, you probably don't want an entry title anyway.
So here are a few solutions for you.
If you'd like to use only the blog title on the front page, try this:
Code: Select all
{if $frontpage}
{$head_title|@default: $blogTitle}
{else}
{$head_title|@default: $blogTitle}: {$entry.title}
{/if}
To use the blog title on any page with multiple entries, check $is_single_entry instead. In fact, this would work:
Code: Select all
{$head_title|@default: $blogTitle}{$if $is_single_entry}: {$entry.title}{/if}
Actually obtaining the most recent entry is more difficult. If these other solution won't work for you, we'll take a shot at that.