Yes, guvcview hangs on the image about 2 seconds after launching. It is not really crashed -- I can close it with the "Quit" button.
Cheese works correctly.
Skype 2.2 Beta works when launched with "LD_PRELOAD=/usr/lib32/libv4l/v4l1compat.so" prefix.
KDE 4.7.2, Logitech Quickcam Communicate STX.