Version:            (using KDE KDE 3.5.8)
Installed from:    Slackware Packages

I think the problem is in some file in Data or Archive subdirs, but how can I confirm and fix this problem?

The messages in Konsole:
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diniz@darkstar:~$ akregator
KCrash: Application 'akregator' crashing...
akregator: ERROR: Communication problem with akregator, it probably crashed.

The messages in Backtrace:
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Using host libthread_db library "/lib/libthread_db.so.1".
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[Thread debugging using libthread_db enabled]
[New Thread -1243900208 (LWP 7941)]
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[KCrash handler]
#5  0xb5960a6c in c4_FormatB::Define ()
   from /usr/lib/kde3/libakregator_mk4storage_plugin.so
#6  0xb59634ca in c4_HandlerSeq::Prepare ()
   from /usr/lib/kde3/libakregator_mk4storage_plugin.so
#7  0xb5966f75 in c4_Persist::LoadAll ()
   from /usr/lib/kde3/libakregator_mk4storage_plugin.so
#8  0xb596bc4a in c4_Storage::c4_Storage ()
   from /usr/lib/kde3/libakregator_mk4storage_plugin.so
#9  0xb595383d in Akregator::Backend::StorageMK4Impl::open ()
   from /usr/lib/kde3/libakregator_mk4storage_plugin.so
#10 0xb5bcca4c in Akregator::Part::Part ()
   from /usr/lib/kde3/libakregatorpart.so
#11 0xb5bcdec1 in KParts::GenericFactory<Akregator::Part>::createPartObject ()
   from /usr/lib/kde3/libakregatorpart.so
#12 0xb7564aaf in KParts::Factory::createPart () from /usr/lib/libkparts.so.2
#13 0xb7564b11 in KParts::Factory::createObject () from /usr/lib/libkparts.so.2
#14 0xb6d77051 in KLibFactory::create () from /usr/lib/libkdecore.so.4
#15 0x08051b0a in ?? ()
#16 0x0812b020 in ?? ()
#17 0x08061898 in ?? ()
#18 0x08052aa2 in ?? ()
#19 0x08052a8d in ?? ()
#20 0xbfbc76a0 in ?? ()
#21 0x08061898 in ?? ()
#22 0xbfbc7724 in ?? ()
#23 0x080b59a8 in ?? ()
#24 0x0813aaa0 in ?? ()
#25 0xb7f0f9d0 in _dl_runtime_resolve () from /lib/ld-linux.so.2
#26 0x080509b0 in ?? ()
#27 0x08061898 in ?? ()
#28 0x08061898 in ?? ()
#29 0xbfbc7724 in ?? ()
#30 0xb6dbcaa0 in KStartupInfoId::~KStartupInfoId ()
   from /usr/lib/libkdecore.so.4
Backtrace stopped: previous frame inner to this frame (corrupt stack?)