Blank or Black Text
In the last release the setting file may have become corrupted, if you tried to save a color change in preferences or make a customised swatch in the color picker.
In the preferences window the colors would turn black on relog, this has been fixed in this release but this may cause problems still, the easiest way to fix this is to logout and delete the settings.xml file, or do a complete uninstall and reinstall of the client.
Windows: C:\Documents and Settings\username\Application Data\SecondLife\user_settings\
Mac : username/Library/Application Support/SecondLife/user_settings/