I am also experiencing the text size issue after upgrading the Blog module. I managed to fix the blog body font to my satisfaction (thanks to everyone who posted here with instructions.)

I want to change the font size of the blog post "subject" (the Title on the add blog entry page), but I can't seem to figure out which style I should be updating ...an I've tried most of them that I thought might be it.

Blog_title isn't it, so which one is it?

Thanks for your help,

Karen

Did you have some content between your braces in your post? 

My current style looks like this:

h2.blog_title
{
    font-family: Georgia, "Times New Roman", Times, serif;
    border-bottom-width: 1px;
    border-bottom-style: dotted;
    border-bottom-color: #666666;
    margin-bottom: 5px;
    padding-bottom: 5px;
    font-size: 30px;
}

...but the titles don't seem to be following that style at all.  The font is just inheriting the "a" styles from

/Portals/_default/Skins/skins/skin.css

according to WebDeveloper.

I have used ctrl-f5 and even shut down my browser and restarted it, just to be extra sure.

So it appears to me they aren't using the h2.blog_title font or font-size.

My skills around stylesheets are new, so if I'm missing something about how all this works, please feel free to talk newbie to me

Well, there's definitely something odd going on with my site.

I can succesfully change some of the characteristics of the blog_title style, such as the dotted line weights and styles, but changes to the font styles result in no change at all to the actual blog title - changing the font type, the size or the weight does nothing.

I'm at a loss as to what to try next.

It is as if these styles are being overridden by some thing else.