Magic Mouse One-Finger Swipe Works for one user but not the other

Question

For the main account on my iMac, I can use a single finger swipe to move back and forward within Chrome. However the second user (also an administrator) cannot use this setting and must instead use the two finger swipe in settings. Both settings are identical but the Chrome browser wont recognize the single finger swipe for the second user. The gesture works fine in Safari, but not Chrome. Any suggestions?

Answer 1

my /etc/group:
root::0:root
bin::1:root,bin,daemon
daemon::2:root,bin,daemon
sys::3:root,bin
adm::4:root,daemon
tty::5:
disk::6:root
lp::7:daemon
mem::8:
kmem::9:
wheel::10:root,hans,ibm,gast
ftp::11:
mail::12:
uucp:x:14:
log::19:root
locate:x:21:
smmsp::25:
http::33:
games::50:
network:x:90:
video:x:91:
audio::92:ibm,gast
optical::93:hal
floppy:x:94:hal
storage:x:95:hal
scanner:x:96:
power:x:98:
nobody::99:
users::100:gast
dbus:x:81:
hans:x:1001:
vboxusers:x:108:hans
policykit:x:1002:
hal:x:82:
kvm:x:78:
nx:x:85:nx
avahi:x:84:
camera:x:97:
gdm:x:1003:
gast:x:1004: