SharePoint System Account has limited Access

Issue:

When you are taking backup of your site with Stsadm command or other way , then your site will be locked as read only. If you have stopped that backup in between then you site locked as read only and it will add 'SharePoint/System' account as limited access and revoke 'Owner' permission as well.

Solutions:

1) Open Central Admin site
2) Go to Application Management
3) Under SharePoint Site Management - > Site collection Quota & Lock
4) Select you web application or Site collection
5) It is locked as 'Read only'
6) Make  it 'Not Locked'
7) Press ok.

Now All user permission will be back as normal.

Thanks
Vikas Dhingra

Permission Break in SharePoint 2007 & Read permission person is not able to see documents

If you have child site and user with read permission is not able to see documents in child site 

Issue: 

1) You have a parent site
2) You have created a new site collection under it (Child Site collection)
3) You have Broken the permission on child site
4) When any users with the read permission is coming on your document library in Child site
5) User is not able to see see the documents [he is able to see only folder]

Solution:

1) Go to SharePoint documemt library settings
2) Go to Version Settings
3) There are two options are given

• Any user who can read items
• Only user who can edit items.

4) Please select 'Any user who can read items'

5) Press Ok & you are done.