hello,
X server : 1.14.3
Xspice ( xf86-video-qxl ) : 0.1.1
libjpeg-turbo : 1.3.0 

#1 : with libjpge-turbo --with-jpeg8 configure options , Xspice works perfectly.
(usr/lib64/libjpeg.so.8.0.2 )

#2 : with libjpeg-turbo : Xspice segfault 
(  libjpeg.so.62.1.0 ) 



X.Org X Server 1.14.3
Release Date: 2013-09-12
X Protocol Version 11, Revision 0
Build Operating System: Linux 3.5.0-sabayon x86_64 Gentoo
Current Operating System: Linux 10.98.98.1 3.11.7 #1 SMP Tue Nov 5 10:14:25 Local time zone must be set--see zic m x86_64
Kernel command line: initrd=/efi/linux/x86_64_P vga=0x317 loglevel=0 backend_dev=/dev/sda1 waitdevice=0 splash BOOT_IMAGE=/efi/linux/x86_64_K 
Build Date: 07 November 2013  09:42:41AM
 
Current version of pixman: 0.30.2
	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.5.log", Time: Thu Nov  7 12:21:05 2013
(++) Using config file: "/etc/conf.d/spiceqxl.xorg.conf"
(==) Using config directory: "/etc/X11/xorg.conf.d"
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
setversion 1.4 failed
Initializing built-in extension Generic Event Extension
Initializing built-in extension SHAPE
Initializing built-in extension MIT-SHM
Initializing built-in extension XInputExtension
Initializing built-in extension XTEST
Initializing built-in extension BIG-REQUESTS
Initializing built-in extension SYNC
Initializing built-in extension XKEYBOARD
Initializing built-in extension XC-MISC
Initializing built-in extension XINERAMA
Initializing built-in extension XFIXES
Initializing built-in extension RENDER
Initializing built-in extension RANDR
Initializing built-in extension COMPOSITE
Initializing built-in extension DAMAGE
Initializing built-in extension MIT-SCREEN-SAVER
Initializing built-in extension DOUBLE-BUFFER
Initializing built-in extension RECORD
Initializing built-in extension DPMS
Initializing built-in extension X-Resource
Initializing built-in extension XVideo
Initializing built-in extension XVideo-MotionCompensation
Initializing built-in extension XFree86-VidModeExtension
Initializing built-in extension XFree86-DGA
Initializing built-in extension XFree86-DRI
Initializing built-in extension DRI2
Loading extension GLX
resizing surface0 to 16777216
memory space from 0x7f0620dec010 to 0x7f0627de9010
memory space from 0x7f0617deb010 to 0x7f061fdeb010
resizing surface0 to 16777216
memory space from 0x7f0620dec010 to 0x7f0627de9010
memory space from 0x7f0617deb010 to 0x7f061fdeb010
(EE) 
(EE) Backtrace:
(EE) 0: Xorg (xorg_backtrace+0x34) [0x597dc4]
(EE) 1: Xorg (0x400000+0x19b9c9) [0x59b9c9]
(EE) 2: /lib64/libpthread.so.0 (0x7f062aeb9000+0x10420) [0x7f062aec9420]
(EE) 3: /usr/lib64/libspice-server.so.1 (0x7f0628bb9000+0x28401) [0x7f0628be1401]
(EE) 4: /usr/lib64/libspice-server.so.1 (0x7f0628bb9000+0x28a0c) [0x7f0628be1a0c]
(EE) 5: /usr/lib64/xorg/modules/drivers/spiceqxl_drv.so (0x7f0628ee4000+0x9d22) [0x7f0628eedd22]
(EE) 6: /usr/lib64/libspice-server.so.1 (0x7f0628bb9000+0x2b219) [0x7f0628be4219]
(EE) 7: /usr/lib64/libspice-server.so.1 (spice_server_add_interface+0x3ae) [0x7f0628c0e7be]
(EE) 8: /usr/lib64/xorg/modules/drivers/spiceqxl_drv.so (0x7f0628ee4000+0xc38b) [0x7f0628ef038b]
(EE) 9: Xorg (AddScreen+0x8a) [0x43b4ea]
(EE) 10: Xorg (InitOutput+0x3ed) [0x47e6dd]
(EE) 11: Xorg (0x400000+0x298ad) [0x4298ad]
(EE) 12: /lib64/libc.so.6 (__libc_start_main+0xfd) [0x7f0629bee2ad]
(EE) 13: Xorg (0x400000+0x29e41) [0x429e41]
(EE) 
(EE) Segmentation fault at address 0x94
(EE) 
Fatal server error:
(EE) Caught signal 11 (Segmentation fault). Server aborting
(EE) 
(EE) 
Please consult the The X.Org Foundation support 


Regards, 
Nicolas Prochazak