Finder crash when ejecting disk or disk image

When I eject a disk image or disk, the Finder blinks out all the finder windows. They either close or I get a momentary blue screen as it seems to reset. It only happens once per session (until I restart or log out the computer, then it will happen again). Any suggestions as to the reaso..

Here's what console reported at the time it happened:

6/16/11 1:54:21 PM com.apple.quicklook[2453] quicklookd[2453]: [WSX] Will not load into com.apple.QuickLookDaemon as the hard coded exclude list says no.

6/16/11 1:54:21 PM com.apple.quicklook[2453] quicklookd[2453]: [WSX] Will not load into com.apple.QuickLookDaemon as the hard coded exclude list says no.

6/16/11 1:54:58 PM Installer[2491] <ZeroSliderSplitView: 0x8bbc00>: the delegate <TargetSelectPage: 0x8cf6b0> was sent -splitView:resizeSubviewsWithOldSize: and left the subview frames in an inconsistent state:

6/16/11 1:54:58 PM Installer[2491] Split view bounds: {{0, 0}, {402, 104}}

6/16/11 1:54:58 PM Installer[2491] Subview frame: {{0, 0}, {0, 32}}

6/16/11 1:54:58 PM Installer[2491] Subview frame: {{0, 0}, {402, 104}}

6/16/11 1:54:58 PM Installer[2491] The outer edges of the subview frames are supposed to line up with the split view's bounds' edges. NSSplitView is working around the problem, perhaps at the cost of more redrawing. (This message is only logged once per NSSplitView.)

6/16/11 1:55:11 PM [0x0-0x1a01a].com.apple.finder[170] Finder(170,0xa08b2720) malloc: *** error for object 0x1b1721f0: incorrect checksum for freed object - object was probably modified after being freed.

6/16/11 1:55:11 PM [0x0-0x1a01a].com.apple.finder[170] *** set a breakpoint in malloc_error_break to debug

6/16/11 1:55:11 PM [0x0-0x1a01a].com.apple.finder[170] Finder(170,0xa08b2720) malloc: *** error for object 0x1b1304d0: incorrect checksum for freed object - object was probably modified after being freed.

6/16/11 1:55:11 PM [0x0-0x1a01a].com.apple.finder[170] *** set a breakpoint in malloc_error_break to debug

6/16/11 1:55:19 PM com.apple.launchd[93] ([0x0-0x1a01a].com.apple.finder[170]) Exited abnormally: Segmentation fault

6/16/11 1:55:20 PM com.apple.quicklook[2605] quicklookd[2605]: [WSX] Will not load into com.apple.QuickLookDaemon as the hard coded exclude list says no.

6/16/11 1:55:20 PM com.apple.quicklook[2605] quicklookd[2605]: [WSX] Will not load into com.apple.QuickLookDaemon as the hard coded exclude list says no.

6/16/11 1:55:35 PM com.apple.quicklook[2659] quicklookd[2659]: [WSX] Will not load into com.apple.QuickLookDaemon as the hard coded exclude list says no.

6/16/11 1:55:35 PM com.apple.quicklook[2659] quicklookd[2659]: [WSX] Will not load into com.apple.QuickLookDaemon as the hard coded exclude list says no.

6/16/11 1:55:35 PM com.apple.quicklook[2659] quicklookd[2659]: [WSX] Will not load into com.apple.QuickLookDaemon as the hard coded exclude list says no.

6/16/11 1:56:01 PM Finder[2603] DebugAssert: Third Party Client: mach_err == err_none ErrorHandler [/Users/mike/mac_dependencies/DropboxPlugin/MoreMenuBypass.m:66]

6/16/11 1:56:01 PM [0x0-0x7b07b].com.apple.finder[2603] Dropbox: MoreMenuBypassInitialize failed!

6/16/11 1:56:01 PM [0x0-0x7b07b].com.apple.finder[2603] Dropbox: MoreMenuBypassInitialize failed!