This is a sticky issue. I've tried a ton of stuff, and I need more eyes on the problem.
The issue is that there is a 1em space showing up only on my home page. I can't isolate what property is making the space. You can check it out at: http://centuryparmerplace.com
Below is the neighborhood section of the site with the correct header spacing:

and this is the home page with the mysterious space:

How do I get rid of it?? What's going on?
It would be nice if you told
It would be nice if you told us which browser is giving you this problem. I tried FF, Safari and Chrome on Mac and IE7 and 8 on PC and all of them show the navigation on the home page the same as your first image. So for me there's no problem. 
I'd be more worried about the
I'd be more worried about the menu items not fitting.

I don't use text only zoom,
I don't use text only zoom, so the navigation fit OK for me 
regia wrote: I don't use text
I don't use text only zoom, so the navigation fit OK for me 
I have a minimum font size set on my main browser (14px). A lot of other folks do as well. It's a worthwhile thing to check all your pages with larger text sizes. 
I have
Arial at 16px and monospace at 14px, minimum at 14px and it's still OK ?? What am I missing??
regia wrote:Arial at 16px
Arial at 16px and monospace at 14px, minimum at 14px and it's still OK ?? What am I missing??
I'm not sure. I went into my preferences and shut off all of the minimum font sizes and it still looks like that. I'm using Opera 11. :shrug:
Checked in Firefox (default
Checked in Firefox (default settings) looks the same as my screen shot. 
I'm a Mac
running FF 3.5 (I know it's outdated but I have my reasons) I think you are PC. Could that account for the difference?
On Mac the nav does not run out of the container on Safari at 14px either, it does at 18px.
Chrome, haven't fiddled with the settings but I don't really like the browser.
I have no idea what my settings are on my Virtual PC, but as I mentioned in my post I didn't find the problem the OP was talking about anyway.
@velomash - Excuse us for hijacking your post
@mods and gurus - any ideas?
Verschwindende wrote: I have
I have a minimum font size set on my main browser (14px). A lot of other folks do as well.
Hey, that is huge text size, if that's the case then either I've become one spring chicken, or all you guys really need glasses
P.S. Better see me without the glasses
Again apologies to OP for hijacking 
If you are wise, you will
If you are wise, you will define the font size on your html or body element to 100% size. That will size your text to the default size they are used to and can read easily. Many people have less than perfect eyesite and need larger fonts to make sites legible. If your site is so designed that this does not work the problem lies with your site, not with the user. CSS allows this with no great difficulty and you should learn to do it as soon as you can.
Websites are not generally printed on paper and every site looks different on different screens and operating systems. You need very much to understand this and learn how to work with it. It isn't actually all that hard to learn to do and will make the difference from a lousy site and a good site.
Ed
I always do
and Velomash has the body-container tag set at 0.8em.
regia wrote: Arial at 16px
Arial at 16px and monospace at 14px, minimum at 14px and it's still OK ?? What am I missing??
The likelyhood that a crotchety old guy like me with weakish eyes will not bother to go to all the trouble of zooming in to your (for me) illegible text and will, instead, leave and not return.
We are not talking
about my website.
In case you hadn't noticed the first post was a question about a mysterious space at the top of the home page. The problem with the text size was mentioned by Vershwindende. What we were talking about is how we set our own browser text sizing and the fact that although both of us have the same settings I am not seeing the same issue as V.
a crotchety old guy like me
I won't disagree with you on that one 
i like your website
i like your website ,beautiful and friendly.ha ha .i can't see any problem..ha ha ,
This thread as gone off
This thread as gone off tangent slightly lets bring it back to the original question?
@danlisa if possible can you make your comments pertinent to the topic and question asked, and the 'ha ha' are not strictly required and crop up in your comments a few times I note 
FWIW it's the h1.site-title
FWIW it's the h1.site-title that is causing your issue and in particular the margin bottom 20px, when that sort of thing happens it's nearly always indicative of presentational rules that are fighting each other and causing an issue, you need to go through all the styles and re-think how you achieve the margin for the h1.