signed into my profile and saying that i am a guest and telling me to log in when i already did and it wont let me switch user and wont stop loading using 1.7.4

[19:30:30 INFO]: Minecraft Launcher 1.5 (through bootstrap 5) started on windows...
[19:30:30 INFO]: Current time is Jul 28, 2014 7:30:30 PM
[19:30:30 INFO]: System.getProperty('os.name') == 'Windows XP'
[19:30:30 INFO]: System.getProperty('os.version') == '5.1'
[19:30:30 INFO]: System.getProperty('os.arch') == 'x86'
[19:30:30 INFO]: System.getProperty('java.version') == '1.7.0_45'
[19:30:30 INFO]: System.getProperty('java.vendor') == 'Oracle Corporation'
[19:30:30 INFO]: System.getProperty('sun.arch.data.model') == '32'
[19:30:30 INFO]: JFX has been detected & successfully loaded
[19:30:31 INFO]: Refreshing local version list...
[19:30:31 INFO]: Refreshing remote version list...
[19:30:31 INFO]: Refresh complete.
[19:30:31 INFO]: Loaded 1 profile(s); selected 'Ob_sTeaLTH'