LinuxSecurity.com: A vulnerability has been found and corrected in libpng:
The png_decompress_chunk function in pngrutil.c in libpng 1.0.x before
1.0.53, 1.2.x before 1.2.43, and 1.4.x before 1.4.1 does not properly
handle compressed ancillary-chunk data that has a disproportionately
I am a long time user of Slackware, and some things makes me think a little about things that may be lacking. One of them is how to keep the system up and running with the latest upstream version, mainly because of security concerns.
Of course Slackware security group delivers new versions when security issues hit packages Slackware packages.
libpng warning: Application was compiled with png.h from libpng-1.2.39
libpng warning: Application is running with png.c from libpng-1.4.0
libpng warning: Incompatible libpng version in application and library
Rgooglemaps depends on png: http://cran.r-project.org/web/packages/RgoogleMaps/index.html
Attempting to run the RgoogleMaps code through Qt resulted in the above errors.