We are currently in the process of upgrading our medium sized ShopWindow server to two Big Fat ShopWindow Servers(tm).
Yesterday we switched over to one big fat server which left behind some things on the old medium sized server which were non-essential - like the ShopWindow support forum and the XML feeds. The XML feeds are designed to be downloaded in a zip file and then worked on on your own webservers/local machines, they are not intended to be streamed from our systems live, that is what the SOAP Webservice is for (the IPS system)
I
am not sure if you are working with them in this way or not, but as it was not intended to be used like that, we figured it would do no harm to leave regeneration of them until the morning (they are currently being rebuilt now)
The upgrade to the server should fix all of the reliability problems we have had of late, including the disappearing images, missing feeds and merchant data generation mentioned above and elsewhere.
The problems with the SOAP Webservice and affiliate data regeneration are unrelated to the problems with the XML files and both should be fixed shortly - i will update as soon as i know more.
The problems with the server have fallen at a time when we are recruiting for more staff which has meant that development and support resources have been split between getting new people to help, and fixing the current problems.
IPS and now ShopWindow has been a runaway success and we are working as hard as we can to ensure that it's reliability is assured and that it is a valuable resource to affiliates.