Problem! Portal tab and logo not showing

I've uploaded a lot of my own logos, and every one of them worked fine apart from the logo and portal tab for some reason.

My forum now looks untidy and has no main logo.

My forum is www.mums-r-us,bestdiscussion.net

This is the main logo url I've been trying to upload:

Spoiler:

And this is the portal one:

Spoiler:

Same picture, I just re-sized it, although that didn't work. I just want the original portal tab back, and my logo put on. Can anyone help?

Thanks.

You might have to refresh your browser and/or your browser's cache to get this to work, if it doesn't work just post back

Everything seems to work for me, using this URL:
http://mums-r-us.bestdiscussion.net/

So yes, try resetting you cache (cookies)

Hi, thanks. It wasn't working for about 2 hours, then it just worked. Not sure why. Sorted though, thanks!