Version:           4.0 (using KDE Devel)
Installed from:    Compiled sources
Compiler:          gcc version 3.3.2 20030908 (Debian prerelease)
OS:          Linux (i686) release 2.4.23-pre4

Using CVS HEAD, maybe 1 or 2 days old:

Go to this link

http://news.google.de/url?ntc=64SA0&q=http://www.chip.de/news/c_news_10924064.html%3Ftid1%3D9226%26tid2%3D0

and you get 

#9  0x412d3ae6 in __assert_fail () from /lib/libc.so.6
#10 0x418d5515 in khtml::RenderFlow::createLineBoxes(khtml::RenderObject*) (
    this=0x85d2bfc, obj=0x4116dfe0) at bidi.cpp:438
#11 0x418d5658 in khtml::RenderFlow::constructLine(khtml::BidiIterator const&, khtml::BidiIterator const&) (this=0x85d2bfc, start=@0xbfffdb20, end=@0xbfffdb10)
    at bidi.cpp:456
#12 0x418d6b4c in khtml::RenderFlow::layoutInlineChildren(bool) (
    this=0x85d2bfc, relayoutChildren=true) at bidi.cpp:1180
#13 0x418e8515 in khtml::RenderFlow::layout() (this=0x85d2bfc)
    at render_flow.cpp:448
#14 0x418e8f2d in khtml::RenderFlow::layoutBlockChildren(bool) (
    this=0x85d2b88, relayoutChildren=true) at render_flow.cpp:602
#15 0x418e8715 in khtml::RenderFlow::layout() (this=0x85d2b88)
    at render_flow.cpp:450
#16 0x418fca95 in khtml::RenderTableRow::layout() (this=0x85d2b64)
    at render_table.cpp:1359
#17 0x418e36be in khtml::RenderContainer::layout() (this=0x85d23e4)
    at render_container.cpp:310
#18 0x418f9810 in khtml::RenderTable::layout() (this=0x85d235c)
    at render_table.cpp:277
#19 0x418e8e6a in khtml::RenderFlow::layoutBlockChildren(bool) (
    this=0x85d21e8, relayoutChildren=true) at render_flow.cpp:647
#20 0x418e8715 in khtml::RenderFlow::layout() (this=0x85d21e8)
    at render_flow.cpp:450
#21 0x418fca95 in khtml::RenderTableRow::layout() (this=0x85d1dac)
    at render_table.cpp:1359
#22 0x418e36be in khtml::RenderContainer::layout() (this=0x85d1a40)
    at render_container.cpp:310
#23 0x418f9810 in khtml::RenderTable::layout() (this=0x85d1958)
    at render_table.cpp:277
#24 0x418e8e6a in khtml::RenderFlow::layoutBlockChildren(bool) (
    this=0x85d18a4, relayoutChildren=true) at render_flow.cpp:647
#25 0x418e8715 in khtml::RenderFlow::layout() (this=0x85d18a4)
    at render_flow.cpp:450
#26 0x418fca95 in khtml::RenderTableRow::layout() (this=0x85d1880)
    at render_table.cpp:1359
#27 0x418e36be in khtml::RenderContainer::layout() (this=0x85d182c)
    at render_container.cpp:310
#28 0x418f9810 in khtml::RenderTable::layout() (this=0x85d17a4)
    at render_table.cpp:277
#29 0x418e8e6a in khtml::RenderFlow::layoutBlockChildren(bool) (
    this=0x85d1730, relayoutChildren=true) at render_flow.cpp:647
#30 0x418e8715 in khtml::RenderFlow::layout() (this=0x85d1730)
    at render_flow.cpp:450
#31 0x418fca95 in khtml::RenderTableRow::layout() (this=0x85d170c)
    at render_table.cpp:1359
#32 0x418e36be in khtml::RenderContainer::layout() (this=0x85c5b30)
    at render_container.cpp:310
#33 0x418f9810 in khtml::RenderTable::layout() (this=0x85c5a48)
    at render_table.cpp:277
#34 0x418e8e6a in khtml::RenderFlow::layoutBlockChildren(bool) (
    this=0x85c5994, relayoutChildren=true) at render_flow.cpp:647
#35 0x418e8715 in khtml::RenderFlow::layout() (this=0x85c5994)
    at render_flow.cpp:450
#36 0x418fca95 in khtml::RenderTableRow::layout() (this=0x859c3c8)
    at render_table.cpp:1359
#37 0x418e36be in khtml::RenderContainer::layout() (this=0x859c374)
    at render_container.cpp:310
#38 0x418f9810 in khtml::RenderTable::layout() (this=0x859c2ec)
    at render_table.cpp:277
#39 0x418e8e6a in khtml::RenderFlow::layoutBlockChildren(bool) (
    this=0x84c7b10, relayoutChildren=true) at render_flow.cpp:647
#40 0x418e8715 in khtml::RenderFlow::layout() (this=0x84c7b10)
    at render_flow.cpp:450
#41 0x41917d15 in khtml::RenderBody::layout() (this=0x84c7b10)
    at render_body.cpp:92
#42 0x418e8e6a in khtml::RenderFlow::layoutBlockChildren(bool) (
    this=0x84c7a54, relayoutChildren=true) at render_flow.cpp:647
#43 0x418e8715 in khtml::RenderFlow::layout() (this=0x84c7a54)
    at render_flow.cpp:450
#44 0x4191777f in khtml::RenderHtml::layout() (this=0x84c7a54)
    at render_html.cpp:117
#45 0x418e8e6a in khtml::RenderFlow::layoutBlockChildren(bool) (
    this=0x84c7970, relayoutChildren=false) at render_flow.cpp:647
#46 0x418e8715 in khtml::RenderFlow::layout() (this=0x84c7970)
    at render_flow.cpp:450
#47 0x4191144b in khtml::RenderCanvas::layout() (this=0x84c7970)
    at render_canvas.cpp:137
#48 0x418369a0 in KHTMLView::layout() (this=0x81d9b88) at khtmlview.cpp:734