PDF Icon not showing in SharePoint 2010 Document Library

Follow the steps below to resolve the issue of PDF icon not showing up in Document Libraries in SharePoint 2010:

1) Download icon - http://www.adobe.com/images/pdficon_small.gif and copy to C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\TEMPLATE\IMAGES

2) Navigate to C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\TEMPLATE\XML - Open the file "DOCICON.XML" in notepad

3) Enter a Mapping key <Mapping Key="pdf" Value="pdficon_small.gif" /> right above the </ByExtension> tag. Save the file and exit

4) Perform iisreset /noforce

5) Do the above steps in each SharePoint server in your farm.

How to hide View All Site Content for everyone except for Admin users in SharePoint 2010

look for this tag on default.master or the custom master page you are using:

<SharePoint:ClusteredSPLinkButtonid="idNavLinkViewAllV4"runat="server"PermissionsString="ViewFormPages"NavigateUrl="~site/_layouts/viewlsts.aspx"ImageClass="s4-specialNavIcon"ImageUrl="/_layouts/images/fgimg.png"ImageWidth=16ImageHeight=16OffsetX=0OffsetY=0Text="<%$Resources:wss,quiklnch_allcontent_short%>"

Replace the PermissionsString property in above tags from "ViewFormPages" to "ManageWeb" accesskey="<%$Resources:wss,quiklnch_allcontent_AK%>"/>