Seems as though there are reports in the android dev community that Google talk not working may have a correlation to the download failed messages in the market. When I try to launch Google talk it opens then immediately closes. I had the same issue with the youtube app and did an adb removal them install of the youtube.apk and that fixed the youtube one. When I try to do the same thing with talk.apk I get a certificate error. Are other peoples Google talk working using clockworks copier? Could that have something to do with the market issue?