Mine has been slow off and on the past two days. Today, I cleared out the cache and the Data, since it would not stop down loading a program. (Actually the program never started to download). I powered off/on several times and my Evo kept trying to start the download (but never actually began).
Once I cleared the Market Data, it would not allow me to sign in. I keep receiving an error message saying the web page is unavailable. Still the Evo tried to download the program.
I have now cleared the Download Manager. No more attempts to download, but I still receive the error message. I have powered off/on since several times, to no avail.