JACKSON There should be no problem viewing gifs, but for some reason,
http://sirocco.accuweather.com/nx_mosaic_640x480c/SIR/inmaSIRIL_.gif?1 does not work (the URL with a question mark at the end). THe question mark is the way slothcam distinguishes between different webcam images, and it hasn't been a problem with any webserver I've ever encountered.
This means it is an issue with the webserver at accuweather. I could try to make a way to force slothcam to not add the ? at the end but I'm not sure right now if I want to do that. Email me if you want to discuss this...
(Version 2.71)