Linux Mint 11 inherits the newly introduced "overlay scrollbars". If you would like to use traditional scrollbars instead, you can deactivate them by removing the "overlay-scrollbar" and "liboverlay-scrollbar-0.1-0" packages and by restarting your computer.
-Acer Aspire One AO532h-Atom CPU-N450-1.66ghz
RAM- 2gbs-(Maya-Xfce) LInux 126.96.36.199-generic(i686)
-ASUSTek Computer INC. AMD Sempron 3200+ Nvidia GeForce 9500 GT- SB Audigy 2
RAM 3gbs- (Mint 13 Xfce - Mint 13 Mate) Linux 3.2.0-26-generic(i686)