I have some of these dating back to January 2012, which is about when I installed 11.10 on this computer. There are far more being created since I updated to 12.04 (mid-May). All are empty:
-rw------- 1 ann ann 0 Jun 18 06:06 .goutputstream-1N9KFW -rw------- 1 ann ann 0 Jun 17 16:03 .goutputstream-CUYLFW -rw------- 1 ann ann 0 Jun 17 12:19 .goutputstream-QMR2FW -rw------- 1 ann ann 0 Jun 15 17:45 .goutputstream-LB21FW -rw------- 1 ann ann 0 Jun 14 21:07 .goutputstream-NVPXFW -rw------- 1 ann ann 0 Jun 14 20:11 .goutputstream-1J5LFW -rw------- 1 ann ann 0 Jun 14 13:20 .goutputstream-OBENFW -rw------- 1 ann ann 0 Jun 14 12:10 .goutputstream-TBIVFW -rw------- 1 ann ann 0 Jun 14 08:47 .goutputstream-SBXXFW -rw------- 1 ann ann 0 Jun 14 07:12 .goutputstream-175YFW -rw------- 1 ann ann 0 Jun 13 10:23 .goutputstream-FC4OFW -rw------- 1 ann ann 0 Jun 12 15:00 .goutputstream-7CRZFW -rw------- 1 ann ann 0 Jun 12 12:18 .goutputstream-2TT4FW -rw------- 1 ann ann 0 Jun 11 07:27 .goutputstream-TPO4FW -rw------- 1 ann ann 0 Jun 10 15:47 .goutputstream-KARXFW -rw------- 1 ann ann 0 Jun 10 15:10 .goutputstream-CFC0FW -rw------- 1 ann ann 0 Jun 9 19:53 .goutputstream-D1O3FW -rw------- 1 ann ann 0 Jun 9 14:40 .goutputstream-EFWNFW -rw------- 1 ann ann 0 Jun 9 14:03 .goutputstream-EF8UFW -rw------- 1 ann ann 0 Jun 9 13:31 .goutputstream-WX0XFW -rw------- 1 ann ann 0 Jun 9 12:36 .goutputstream-Y4J2FW -rw------- 1 ann ann 0 Jun 8 18:22 .goutputstream-S06JFW -rw------- 1 ann ann 0 Jun 8 08:57 .goutputstream-EO4JFW -rw------- 1 ann ann 0 Jun 7 17:13 .goutputstream-QRR3FW -rw------- 1 ann ann 0 Jun 6 18:29 .goutputstream-KBREFW -rw------- 1 ann ann 0 Jun 6 06:10 .goutputstream-TMWEFW -rw------- 1 ann ann 0 Jun 4 08:45 .goutputstream-7C49EW -rw------- 1 ann ann 0 Jun 3 21:29 .goutputstream-M3RCFW -rw------- 1 ann ann 0 Jun 3 18:15 .goutputstream-106VEW -rw------- 1 ann ann 0 May 31 07:21 .goutputstream-5D0YEW -rw------- 1 ann ann 0 May 29 22:58 .goutputstream-W5A9EW -rw------- 1 ann ann 0 May 27 13:08 .goutputstream-N23FFW -rw------- 1 ann ann 0 May 26 18:00 .goutputstream-SRREFW -rw------- 1 ann ann 0 May 26 05:30 .goutputstream-J80AFW -rw------- 1 ann ann 0 May 23 17:24 .goutputstream-4EQLEW -rw------- 1 ann ann 0 May 15 07:49 .goutputstream-U8ZBEW -rw------- 1 ann ann 0 May 13 07:20 .goutputstream-C4L7DW -rw------- 1 ann ann 0 Apr 12 18:23 .goutputstream-D50FCW -rw------- 1 ann ann 0 Mar 10 05:26 .goutputstream-FS2PAW -rw------- 1 ann ann 0 Feb 18 17:05 .goutputstream-47WY9V -rw------- 1 ann ann 0 Feb 8 19:48 .goutputstream-TVPB9V -rw------- 1 ann ann 0 Feb 6 18:36 .goutputstream-UDPC9V -rw------- 1 ann ann 0 Feb 2 16:50 .goutputstream-XBB88V -rw------- 1 ann ann 0 Jan 30 09:22 .goutputstream-093N8V -rw------- 1 ann ann 0 Jan 28 04:42 .goutputstream-SDVX8V -rw------- 1 ann ann 0 Jan 27 11:56 .goutputstream-76GO8V I just noticed these things this morning so I can't accurately associate them with a particular activity, but I did think it should be noted that some were created while running 11.10. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/984785 Title: .goutputstream files polluting $HOME Status in Light Display Manager: New Status in X.Org X server: New Status in “lightdm” package in Ubuntu: Confirmed Status in “lightdm” source package in Precise: Confirmed Bug description: .goutputstream files polluting $HOME. Which software or operation is creating these and why? ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: xauth 1:1.0.6-1 ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14 Uname: Linux 3.2.0-23-generic x86_64 NonfreeKernelModules: nvidia & ati ApportVersion: 2.0.1-0ubuntu4 Architecture: amd64 Date: Wed Apr 18 13:29:31 2012 InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" ProcEnviron: PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: xauth UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/984785/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp