1、

解决方案： Try this Project->Clean in eclipse, and the deploy it again

2、批量更新了package的名称，引起AndroidManifest.xml变更

解决方案：去除类似签名的 com.snda.webgetter.test前缀com.snda.webgetter，重新编译

3、修改了AndroidManifest.xml的provider，引起

[2011-08-30 17:31:42 - WebGetter] Installation error: INSTALL_FAILED_CONFLICTING_PROVIDER
[2011-08-30 17:31:42 - WebGetter] Please check logcat output for more details.
[2011-08-30 17:31:42 - WebGetter] Launch canceled!

解决方案：启动模拟器，然后进入菜单
settings->applications->mange
applications-> select the application->select "unistall".
这样就能彻底删除了

4、Activity not started, its current task has been brought to the front

解决方案：project->clean