This problem occurs at computer start up when Skype tries to automatically log you in.
SOLUTION
WINDOWS XP
Start –> Control Panel –> Regional and Language Options
Click “Regional Options”
At Standards and Formats set the drop down to UK if you are in England and UK or your own country’s setting
At Location set the drop down to UK if you are in England and UK or your own country’s setting
Click Apply
Click OK
Click “Language” Click “Details”
Click “Add” to add the “English (United Kingdom)” keyboard
Click on any other keyboard and delete it using the Delete button
Click OK
Click “Advanced” set the drop down to UK if you are in England and UK or your own country’s setting
Click OK
A message may be displayed requesting a machine restart, click restart
WINDOWS VISTA AND WINDOWS 7
Start –> Control Panel –> Clock Language and Region
Click Language and Region
In each tab change the Setting to UK or your local language from United States
Click Apply and OK on each setting
Once completed, A message may be displayed requesting a machine restart, click restart