Commenting and Markup Tool Default Properties

If the problem is with your registry settings you can try to re-create the Acrobat Standard file-based preferences folder to eliminate problems that damaged preferences cause. Acrobat will recreate the preference files on launch when the preference files do not exist. Most user specific settings are stored in the registry. Most preference problems are caused by these file-based preferences, although the majority of the Acrobat's preferences are stored within the registry.

Note: Custom settings for Collaboration, JavaScripts, Organizer, Security, Stamps, Color Management, Auto Fill, Web Capture and Updater will be affected by using this solution.

To re-create the Acrobat Standard folder:

1. Quit Acrobat.
2. In Windows Explorer, go to c:\Documents and Settings\ [User Name] \Application Data\Adobe\Acrobat\8.0 folder and move the Preferences folder to another location (for example, C:\Temp).
3. Launch Acrobat.

If the problem recurs after you re-create the Acrobat Preferences folder, then the problem isn't related to the Preferences folder. To restore custom settings, drag the folder you moved in step 2 back to its original location, and then click Yes To All to replace the new Preferences folder.

Information in this post came from the following troubleshooting guide:
http://kb.adobe.com/selfservice/viewContent.do?externalId=kb403720&sliceId=1