ERROR: A temporary profile is loaded after you log on to a Windows 7-based system

To resolve this problem, follow these steps:
1. Log on to the system by using an administrative user account other than the user account that is experiencing the problem.
2. Back up all data in the current user's profile folder if the profile folder still exists, and then delete the profile folder. By default, the profile resides in the following location:%SystemDrive%\Users\UserName
3. Click Start, type regedit in the Start Search box, and then press ENTER.

If you are prompted for an administrator password or for confirmation, type your password, or click Continue.
4. Locate the following registry subkey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList
5. Under the ProfileList subkey, delete the subkey that is named SID.bak. 

Note SID is a placeholder for the security identifier (SID) of the user account that is experiencing the problem. The SID.bak subkey should contain a ProfileImagePath registry entry that points to the original profile folder of the user account that is experiencing the problem.
6. Exit Registry Editor.
7. Log off the system.
8. Log on to the system again.
After you log on to the system, the profile folder is re-created.

Source:
http://support.microsoft.com/kb/947242/en-au

ERROR: Microsoft Lync 2010 must be installed by running the appropriate Lync setup executable

Issue:

You experience the following symptoms:

• A local Windows Installer (MSI) installation for Microsoft Lync 2010 can fail, and the following warning is displayed in the Microsoft Lync 2010 Setup dialog box:Microsoft Lync 2010 must be installed by running the appropriate Lync setup executable


Resolution:

Use the Lync 2010 UseMSIForLyncInstallation Group Policy setting to enable or block MSI deployments for Lync.msi as follows:

Name: UseMSIForLyncInstallation

Default: 0

Range: 1 or 0

Registry Location:HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Communicator

To do this, follow these steps:

1. Click Start, click Run, type regedit, and then click OK.

2. Locate and then click the following registry subkey HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Communicator

3. On the Edit menu, point to New, and then click DWORD Value.

4. Type UseMSIForLyncInstallation, and then press ENTER to name the registry entry.

5. Right-click UseMSIForLyncInstallation, and then click Modify.

6. In the Value data box, type 1 if that value is not already displayed, and then click OK.

7. Exit Registry Editor.

8. Restart the Windows client.

Source:

http://support.microsoft.com/kb/2477965