Safari does not open webpage but loads the source

Hi.. my website www.ravmek.com was working fine with Safari until one day. Now, the website opens in IE, Firefox, Chrome etc but not in Safari.

I don't get any error message, just a blank page showing nothing. I don't get no time-out message or anything. I have Mac OS 10.5.8 and Safari 5.0.2 and I have tried deleting the cookies and resetting the cache.

Besides I also noticed that while trying to load www.ravmek.com/Services.php or www.ravmek.com/About-us.php the page won't load but I can see the source code.

Please let me know if you would like me to share any further info.

Thanks in advance.