In dual monitor setup, if one of the two is rotated, moving the cursor from the rotated screen to the normal screen shows two cursors, one active cursor with the correct orientation and a second cursor with the orientation of the rotated screen. Only one cursor is shown, if the cursor is moved from the normal screen to the rotated one. The second, stray cursor is a bit shy: it wouldn't show on a screenshot made with gimp and does vanish if the real cursor is updated (e.g. on window boarders).

Reverting 
|commit 52c1e64692e3e80826e526dd14aec4bee137a19b
|Author: Chris Wilson <chris@chris-wilson.co.uk>
|Date:   Thu Aug 7 11:34:26 2014 +0100
|
|    sna: Flush cursor width changes
does fix this behaviour.

System:
xf86-video-intel 2.99.914-git-6f69188cb2959abfb2fcd3f81cd4146aa3876bb5
x86_32 Linux 3.16

VGA-compatible devices on PCI bus:
----------------------------------
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03)

Versions of packages xserver-xorg-video-intel depends on:
ii  libc6                                  2.19-7
ii  libdrm-intel1                          2.4.54-1
ii  libdrm2                                2.4.54-1
ii  libpciaccess0                          0.13.2-3
ii  libpixman-1-0                          0.32.6-1
ii  libudev1                               208-7
ii  libx11-6                               2:1.6.2-2
ii  libx11-xcb1                            2:1.6.2-2
ii  libxcb-dri2-0                          1.10-3
ii  libxcb-dri3-0                          1.10-3
ii  libxcb-sync1                           1.10-3
ii  libxcb-util0                           0.3.8-2
ii  libxcb1                                1.10-3
ii  libxcursor1                            1:1.1.14-1
ii  libxdamage1                            1:1.1.4-2
ii  libxext6                               2:1.3.2-1
ii  libxfixes3                             1:5.0.1-2
ii  libxinerama1                           2:1.1.3-1
ii  libxrandr2                             2:1.4.2-1
ii  libxrender1                            1:0.9.8-1
ii  libxshmfence1                          1.1-3
ii  libxtst6                               2:1.2.2-1
ii  libxv1                                 2:1.0.10-1
ii  libxvmc1                               2:1.0.8-2
ii  xserver-xorg-core [xorg-video-abi-18]  2:1.16.0-1