Problem uploading single and gallery images to wordpress

Hello.

Since webnesday last week I am finding it impossible to upload images whereas I was able to do so just fine at the beginning of the week.

When I do try, thy take ages (many minutes) and then show an error (red box on the right of the gallery saying “An error occurred in the upload. Please try again later.”)
If I save the page and go back into the gallery the image has uploaded twice.

This is across multiple sites, not just one and across many different WP versions.

I then tried the same images on a wordpress site hosted with bluehost.com and they uploaded perfectly. So it is not my connection to the internet, but a problem on my host company’s side i would have to assume…

My host company says their systems are all working fine, but i am not sure if this is due to a fix they added as part of the heartbleed security fix.

I would really appreciate any help you can provide.

Thank you.