Skype crashes when I login
Same happened to me today after an update. I fixed it by DISABLING the "Vista compatibility mode" option, which I had set.
Instructions: right-click over program icon, Properties->Compatibility UNCHECK the checkbox "Run this program in compatibility mode for..."
Worked for me.
Note: I had set previously the Vista compat mode to get the old behaviour of puting the skype icon in the alert area (instead of the taskbar) when minimized. Bot this can now be done in the Options->Advanced->Keep Skype in taskbar... (uncheck)
BTW: I had this crash (first in my Skype) minutes after knowing about MS buying Skype... but it seems it was just a coincidence :-)
Moved from closed question.
Try this more recent foobar fix.
Windows
If the Skype icon is displayed in the system tray at the bottom right of the screen, right-click it and select Quit.
Click Start, type "run" and press Enter. (On Windows XP: Click Start and then Run.)
Type "%appdata%\skype" and click OK.
Locate and delete the file shared.xml. The file may be displayed as shared if file extensions are not displayed by default on your computer.
Restart Skype.
If you cannot find this file:
Click Start, type "run" and press Enter. (On Windows XP: Click Start and then Run.)
Type "control folders" and click OK.
In the View tab, ensure that Show hidden files and folders is enabled.
Repeat the instructions from the beginning.