After Upgrade Issues

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Hi,

I have been creating a site using Concrete5 on a test server and have just upgraded to version 5.3.3.1. after a little tweaking I have managed to move the site to its final location, however now the page load up is very slow between 10-20 seconds.
I have increased the memory limit through php, cleared all cache, checked hosting side and all seems fine.

The test server url is:

http://www.hcdemo.net/conc531/

the new url is :

http://www.thelinkmag.co.uk

As you can see loadup times are very slow, the design is also very different but i think that is just a version and mod issue which i will look into, also i am now unable to upload any images!!.

If any one has had these issues before or can offer any help I would be very grateful.