http://www.sevenforums.com/tutorials/107982-clfs-transaction-logs-reset.html The Common Log File System (CLFS) is a general-purpose logging service that can be used by software clients running in user-mode or kernel-mode.(source Using Common Log File System (Windows Driver Kit))

If due to any reason system transaction logs are in an inconsistant state you may have following problems in your system

-Windows Update Error 0x80070643,0x8007000B,0x80071A91
-Repeatedly offered the same update,in update history is information about succesfully installed an update,although in Programs and Features>>View Installed Updates there is no this update
-Windows Backup Errror 0x80071A91
-System Restore Error 0x80071A91
-Task Scheduler Error Transaction support within the specified file system resource manager is not started or was shut down due to an error and other issues with Task Scheduler
-issues with Windows Search service (i.e Event ID 1006 and other)

-possibly below methods can help you fix anything 0x80071A91 error in your system and many other unknow poorly documented errors

Владимир Г.А в каких случаях эта папка появляется? Есть несколько машин с 7-ой и на одних эта папка есть а на других нету.

еще раз нагадываем:
автор-Windows Update Error 0x80070643,0x8007000B,0x80071A91
-Repeatedly offered the same update,in update history is information about succesfully installed an update,although in Programs and Features>>View Installed Updates there is no this update
-Windows Backup Errror 0x80071A91
-System Restore Error 0x80071A91
-Task Scheduler Error Transaction support within the specified file system resource manager is not started or was shut down due to an error and other issues with Task Scheduler
-issues with Windows Search service (i.e Event ID 1006 and other)
-possibly below methods can help you fix anything 0x80071A91 error in your system and many other unknow poorly documented errors