There is currently an issue with accessing all the file servers as a result of the domain switch yesterday. While a fix has been made that should sort the issue the problem will not actually be resolved until the name servers have updated, and then your ISP's DNS cache has propogated. This can take anywhere from 1 to 72 hours.
I apologise for the inconvenience and recommend you check back regularly, making sure to try the different file servers available. Also please note that some people will be able to access the servers earlier than others; this is due to the dynamics of how the internet infastructure works and there is no "quick fix" to speed things up.
Files smaller than 2MB in size are unaffected by this issue.