I happened to drag the Sojourner Truth picture from here <http://joyefulthings.blogspot.com/2007_01_01_archive.html> but also tried a few others. Kept hanging the finder and crashing webkit most of the time. On relaunch of the finder most of the time the picture appeared on the desktop.
Attached are wbekit crash and here's a snippet from the system log:
Sep 27 09:40:18 com.apple.launchd.peruser.502 ([0x0-0x5ae5ae].org.webkit.nightly.WebKit): Job appears to have crashed: Segmentation fault
Sep 27 09:40:18 com.apple.coreservicesd: NOTE: Using non-mach-based version of client -> server communication, via direct function calls.
Sep 27 09:40:18: --- last message repeated 1 time ---
Sep 27 09:40:18 ReportCrash: Saved crash report for Safari version r68242 (68242) to /Users/smkolins/Library/Logs/DiagnosticReports/Safari_2010-09-27-094018_AALADM38.crash
Sep 27 09:40:47 com.apple.launchd.peruser.502 (com.apple.Finder): Exited: Terminated
Sep 27 09:40:51 Safari: WebKit failed to shut down cleanly. Checking for Safari extensions.
Sep 27 09:40:51 Safari: WebKit r68242 initialized.
Sep 27 09:40:51 com.apple.coreservicesd: NOTE: Using non-mach-based version of client -> server communication, via direct function calls.
Sep 27 09:40:54: --- last message repeated 3 times ---
Safari 5.02 doesn't crash or cause Finder problems doing the same thing.
This should be fixed in the next nightly build.
*** This bug has been marked as a duplicate of bug 46380 ***