[dcpyke]

Re-installing calibre did not help however I decided to try a factory reset and it's started working again

Looks like it was the kobo after all - so far gone in and out of browser and still allows me to multi download.

Not sure if it had something to do with the fact I set it as the home page but Ill post if I'm ever able to duplicate the issue.

*****
I finally found out what the problem was

Turns out it had nothing to do with the Kobo or Calibre but my desktop network card

It was a bandwidth issue, the upload speed was almost non-existent even though it was on LAN.

Switched Ethernet cards and had no problems.