After upgrading to raring (13.04), the steam client stopped painting the inside of its windows.

EDIT: Not only the login window, but the main window as well after guestimating the login procedure).

Intel HD4000, Core i3

tribaal@eiger:~$ steam
Installing breakpad exception handler for appid(steam)/version(1359078420_client)
Installing breakpad exception handler for appid(steam)/version(1359078420_client)
unlinked 0 orphaned pipes
Gtk-Message: Failed to load module "overlay-scrollbar"
Installing breakpad exception handler for appid(steam)/version(1359078420_client)
[0125/114449:WARNING:proxy_service.cc(646)] PAC support disabled because there is no system implementation
Installing breakpad exception handler for appid(steam)/version(1359078420_client)
Installing breakpad exception handler for appid(steam)/version(1359078420_client)
Installing breakpad exception handler for appid(steam)/version(1359078420_client)
Generating new string page texture 7: 128x256, total string texture memory is 131.07 KB
Generating new string page texture 8: 48x256, total string texture memory is 180.22 KB
Generating new string page texture 9: 256x256, total string texture memory is 442.37 KB
Generating new string page texture 10: 64x256, total string texture memory is 507.90 KB
Shutting down. . .
unlinked 2 orphaned pipes
CAsyncIOManager: 0 threads terminating. 0 reads, 0 writes, 0 deferrals.
CAsyncIOManager: 2194 single object sleeps, 0 multi object sleeps
CAsyncIOManager: 0 single object alertable sleeps, 1 multi object alertable sleeps