I stumbled upon this bug when erasing USB-key with Startup Disk Creator,
and found out following:
These commands consume 100% CPU:
/usr/lib/udisks/udisks-daemon
udisks-helper-modify-partition /dev/sdb 1048576 7962886144 0x0c boot
When stracing processes of those commands, both are stuck
This affects me too when using precise.
I can resize other windows really nicely, but it takes *ages* to resize gnome
terminal windows.
These error messages keep appearing in .xsession-errors file
16:00:52.093 E [p2p:240 ] Got bad file info from AP
(Size=644)!