I've been getting the "unsuccessful install" messages when I try to download a new program from the app store. I tried using appbrain and the "market" applications to download. I have a new streak on ATT purchased from Dell. It worked fine for two weeks. Now it will no longer install any apps. I'm on 1.6. I am now into almost a week without being able to download new apps. I tried: Restoring the Streak to a week earlier when I thought the app market worked; I uninstalled apps I didn't use that I installed recently; I have over 1gb free in internal memory; I cleared the cache in the appbrain and market apps. I tried everything mentioned in other forums by people with the same problem. Today I may enter Dell Hell and try to call tech support. Any other ideas? I really don't want to do a factory reset since it will wipe out all my programs. If it doesn't work then I will still not be able to download and have no new programs, although I guess at that point I could do another "restore" to get them back. Anybody have any other ideas before I try the phone call?