I'm using Fedora 17 with KDE 4.9.4. Around a week, I'd installed Rekonq 2.0, but recently it's having a problem: when I write a text on the URL bar (for example, I visited the Qt Project page on a earlier version of Rekonq) like "qt" suddenly the app freezes. Finally, I open System Monitor to force close it.

Reproducible: Sometimes

Steps to Reproduce:
1. Write a text related with a URL on the bar
2. Rekonq freezes
Actual Results:  
Usually the app freezes...

Expected Results:  
Find a URL containing a text on a search history

I attach a backtrace:

Application: rekonq (rekonq), signal: Segmentation fault
Using host libthread_db library "/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0xb77507c0 (LWP 11106))]

Thread 3 (Thread 0xb47c1b40 (LWP 11107)):
#0  0xb778c424 in __kernel_vsyscall ()
#1  0x42be912c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S:172
#2  0x4c987db9 in WTF::TCMalloc_PageHeap::scavengerThread (this=this@entry=0x4d0fcc80) at wtf/FastMalloc.cpp:2495
#3  0x4c987eb0 in WTF::TCMalloc_PageHeap::runScavengerThread (context=0x4d0fcc80) at wtf/FastMalloc.cpp:1618
#4  0x42be5adf in start_thread (arg=0xb47c1b40) at pthread_create.c:309
#5  0x42b1842e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:133

Thread 2 (Thread 0xb3e98b40 (LWP 11108)):
#0  0xb778c424 in __kernel_vsyscall ()
#1  0x42b0df34 in __GI___poll (fds=fds@entry=0xb3500df0, nfds=nfds@entry=1, timeout=timeout@entry=7996) at ../sysdeps/unix/sysv/linux/poll.c:87
#2  0x42f50f5c in g_poll (fds=0xb3500df0, nfds=1, timeout=7996) at gpoll.c:132
#3  0x42f423e0 in g_main_context_poll (n_fds=1, fds=0xb3500df0, timeout=<optimized out>, context=0xb35004e0, priority=<optimized out>) at gmain.c:3440
#4  g_main_context_iterate (context=context@entry=0xb35004e0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3141
#5  0x42f42542 in g_main_context_iteration (context=0xb35004e0, may_block=1) at gmain.c:3207
#6  0x4e9a2a5f in QEventDispatcherGlib::processEvents (this=0xb3500468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0x4e96eaad in QEventLoop::processEvents (this=this@entry=0xb3e981d8, flags=...) at kernel/qeventloop.cpp:149
#8  0x4e96eda9 in QEventLoop::exec (this=0xb3e981d8, flags=...) at kernel/qeventloop.cpp:204
#9  0x4e85709c in QThread::exec (this=this@entry=0x9e2a0d0) at thread/qthread.cpp:542
#10 0x4e8571fc in QThread::run (this=0x9e2a0d0) at thread/qthread.cpp:609
#11 0x4e85a52a in QThreadPrivate::start (arg=0x9e2a0d0) at thread/qthread_unix.cpp:338
#12 0x42be5adf in start_thread (arg=0xb3e98b40) at pthread_create.c:309
#13 0x42b1842e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:133

Thread 1 (Thread 0xb77507c0 (LWP 11106)):
[KCrash Handler]
#7  0x485ff732 in ?? () from /lib/libkdeinit4_rekonq.so
#8  0x4e97018e in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x9cf2228, receiver=0x9e067c0, event=0xbfb475ec) at kernel/qcoreapplication.cpp:1056
#9  0x4ec3602e in QApplicationPrivate::notify_helper (this=0x9cf2228, receiver=0x9e067c0, e=0xbfb475ec) at kernel/qapplication.cpp:4558
#10 0x4ec3abc5 in QApplication::notify (this=0x9cf2228, receiver=0x9e067c0, e=0xbfb475ec) at kernel/qapplication.cpp:4423
#11 0x48295fe2 in KApplication::notify (this=0xbfb47d18, receiver=0x9e067c0, event=0xbfb475ec) at /usr/src/debug/kdelibs-4.9.4/kdeui/kernel/kapplication.cpp:311
#12 0x4e97000e in QCoreApplication::notifyInternal (this=0xbfb47d18, receiver=0x9e067c0, event=0xbfb475ec) at kernel/qcoreapplication.cpp:946
#13 0x4ec3a62c in sendSpontaneousEvent (event=<optimized out>, receiver=<optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:234
#14 QApplication::setActiveWindow (act=0x9e08198) at kernel/qapplication.cpp:2641
#15 0x4ecbef17 in QApplication::x11ProcessEvent (this=0xbfb47d18, event=0xbfb4794c) at kernel/qapplication_x11.cpp:3579
#16 0x4ece8a15 in x11EventSourceDispatch (s=s@entry=0x9cf9740, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148
#17 0x42f420bb in g_main_dispatch (context=0x9cf5d20, context@entry=0x9cf3228) at gmain.c:2539
#18 g_main_context_dispatch (context=context@entry=0x9cf5d20) at gmain.c:3075
#19 0x42f42460 in g_main_context_iterate (context=context@entry=0x9cf5d20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3146
#20 0x42f42542 in g_main_context_iteration (context=0x9cf5d20, may_block=1) at gmain.c:3207
#21 0x4e9a2a42 in QEventDispatcherGlib::processEvents (this=0x9cc7fa8, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#22 0x4ece869b in QGuiEventDispatcherGlib::processEvents (this=0x9cc7fa8, flags=...) at kernel/qguieventdispatcher_glib.cpp:207
#23 0x4e96eaad in QEventLoop::processEvents (this=this@entry=0xbfb47c48, flags=...) at kernel/qeventloop.cpp:149
#24 0x4e96eda9 in QEventLoop::exec (this=0xbfb47c48, flags=...) at kernel/qeventloop.cpp:204
#25 0x4e9742eb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#26 0x4ec33ed5 in QApplication::exec () at kernel/qapplication.cpp:3823
#27 0x486bb3b8 in kdemain () from /lib/libkdeinit4_rekonq.so
#28 0x0804870c in ?? ()
#29 0x42a3d635 in __libc_start_main (main=0x80486f0, argc=1, ubp_av=0xbfb47e04, init=0x8048820 <__libc_csu_init>, fini=0x8048890 <__libc_csu_fini>, rtld_fini=0x42a10a90 <_dl_fini>, stack_end=0xbfb47dfc) at libc-start.c:226
#30 0x08048731 in _start ()