I have run quite a few WordPress blogs and only this one on gain4you.net has this problem - basically no matter how I tweak the <title> tag in the header.php file, the title only shows the blog name rather than post or page tile. See this post for example:
I tried everything, including installing plugins such as All in One SEO, Light SEO, etc., none worked. Then I installed the SEO Title Tag plugin:
For my surprise, this plugin works in displaying post, page and category names as titles! So this issue has been resolved while I post it - just to tell you how I got the problem fixed.