0   com.apple.WebCore             	0x9535ff20 WebCore::ApplyStyleCommand::splitTextElementAtStartIfNeeded(WebCore::Position const&, WebCore::Position const&) + 32
1   com.apple.WebCore             	0x9535f02c WebCore::ApplyStyleCommand::applyInlineStyle(WebCore::CSSMutableStyleDeclaration*) + 396
2   com.apple.WebCore             	0x9535bcac WebCore::ApplyStyleCommand::doApply() + 284
3   com.apple.WebCore             	0x952e5eb8 WebCore::EditCommand::apply() + 168
4   com.apple.WebCore             	0x952e66cc WebCore::CompositeEditCommand::applyCommandToComposite(WTF::PassRefPtr) + 44
5   com.apple.WebCore             	0x9535baf8 WebCore::CompositeEditCommand::applyStyle(WebCore::CSSStyleDeclaration*, WebCore::Position const&, WebCore::Position const&, WebCore::EditAction) + 120
6   com.apple.WebCore             	0x9535b5fc WebCore::ReplaceSelectionCommand::completeHTMLReplacement(WebCore::Position const&) + 700
7   com.apple.WebCore             	0x95358240 WebCore::ReplaceSelectionCommand::doApply() + 11600
8   com.apple.WebCore             	0x952e5eb8 WebCore::EditCommand::apply() + 168
9   com.apple.WebCore             	0x953f0d0c -[WebCoreFrameBridge replaceSelectionWithFragment:selectReplacement:smartReplace:matchStyle:] + 236
10  com.apple.WebKit              	0x94b1a82c -[WebHTMLView(WebHTMLViewFileInternal) _pasteWithPasteboard:allowPlainText:] + 220
11  com.apple.AppKit              	0x918b9358 -[NSApplication sendAction:to:from:] + 104
12  com.apple.Safari              	0x00037870 0x1000 + 223344
13  com.apple.AppKit              	0x91954990 -[NSMenu performActionForItemAtIndex:] + 408
14  com.apple.AppKit              	0x919546c0 -[NSCarbonMenuImpl performActionWithHighlightingForItemAtIndex:] + 228
15  com.apple.AppKit              	0x91954388 -[NSMenu performKeyEquivalent:] + 744
16  com.apple.AppKit              	0x91952e6c -[NSApplication _handleKeyEquivalent:] + 456
17  com.apple.AppKit              	0x91889a94 -[NSApplication sendEvent:] + 3548
18  com.apple.Safari              	0x00032fb0 0x1000 + 204720
19  com.apple.AppKit              	0x917f6ed4 -[NSApplication run] + 776
20  com.apple.AppKit              	0x917c792c NSApplicationMain + 440
21  com.apple.Safari              	0x00002d10 0x1000 + 7440
22  ???                           	0x00000ffc 0 + 4092

For anyone blogging and trying to paste content into the blogger Compose post window, good luck in Safari!