hi sofia,

in devval, rel_0, there's a fpe in mugirl, e.g. see:
https://atlasrtt.cern.ch/rtt/rel_0/devval/build/x86_64-slc5-gcc43-opt/offline/recexrecotest/mc10/mc10_log

athenaeventloopmgr                                   info   ===&gt;&gt;&gt;  start processing event #31972, run #105200 71 events processed so far  &lt;&lt;&lt;===
toolsvc.muontracksummaryhelper                    warning number of hits in road &lt; 0 in second projection: -1, setting = 0. (nhits in second projection = -1)
-------------------------------------------------------------------------------------
core dump from coredumpsvc on lxbsq1534.cern.ch at sun jul 31 08:34:53 2011

caught signal 8(floating point exception). details: 
  errno = 0, code = 3 (floating point divide by zero)
  pid   = -950530034, uid = 10922
  value = (0, 0)
  vmem = 2140.45 mb
  rss  = 1563.71 mb
  total-ram = 23970 mb
  free-ram  = 1713.1 mb
  buffer-ram= 442.344 mb
  total-swap= 40962 mb
  free-swap = 40834 mb
  addr  = 0x2aaac758100e

event counter: 72
eventid: [run,evt,lumi,time,bunchcross,detmask] = [105200,31972,3,0:0,0,0x0]
last incident: athenaeventloopmgr:beginevent
current algorithm: mugirl
algorithm stack: 
   athmasterseq
   athalgseq
   mugirl
-------------------------------------------------------------------------------------

(pid=11171 ppid=29340) received fatal signal 8 (floating point exception)
signal context:
  signo  = 8, errno = 0, code = 3 (floating point divide by zero)
  pid    = -950530034, uid = 10922
  value  = (0, (nil))
  addr   = 0x2aaac758100e
  stack  = (2, 0, (nil))

  00000000 00000000 f8b11fec aa2a0000 00000000 00000040 fb211940 00000000
  007696ce aa2a0000 00b21fec aa2a0000 a011fdf5 ff7f0000 0007fdf5 ff7f0000
  007696ce aa2a0000 48a0c8dd aa2a0000 d8a16ed9 aa2a0000 10468844 00000000
  b019f2e2 aa2a0000 809264f2 aa2a0000 b019f2e2 aa2a0000 8806fdf5 ff7f0000
  0e1058c7 aa2a0000 46020100 00000000 33000000 0000bbbf 00000000 00000000
  13000000 00000000 00000000 00000000 00000000 00000000 0004fdf5 ff7f0000
  0aaa5651 09cf483f 1a5c7423 4a6330bf 00000000 00000000 9004fdf5 ff7f0000
  28000000 00000000 01000000 00000000 01000000 00000000 c02c6cc0 412b0000

stack trace:
 0x2b41cb48581c athena::debugaids::stacktrace(int) ??:0   + 0x4c [/afs/cern.ch/atlas/software/builds/nightlies/devval/atlascore/rel_0/installarea/x86_64-slc5-gcc43-opt/lib/libcxxutils.so]
 0x2b41cb4865f2 athena::signal::fataldump(int, siginfo*, void*) ??:0   + 0x152 [/afs/cern.ch/atlas/software/builds/nightlies/devval/atlascore/rel_0/installarea/x86_64-slc5-gcc43-opt/lib/libcxxutils.so]
 0x2b41cb486904 athena::signal::fatal(int, siginfo*, void*) ??:0   + 0x194 [/afs/cern.ch/atlas/software/builds/nightlies/devval/atlascore/rel_0/installarea/x86_64-slc5-gcc43-opt/lib/libcxxutils.so]
 0x2b41cce5af51 coredumpsvchandler::action(int, siginfo*, void*) ??:0   + 0x101 [/afs/cern.ch/atlas/software/builds/nightlies/devval/atlascore/rel_0/installarea/x86_64-slc5-gcc43-opt/lib/libathenaservices.so]
 0x373700eb10 ???  + 0x373700eb10 [/lib64/libpthread.so.0]
 0x2aaac758100e mugirlns::stautilecal::averagebeta() ??:0   + 0x6e [/afs/cern.ch/atlas/software/builds/nightlies/devval/atlasreconstruction/rel_0/installarea/x86_64-slc5-gcc43-opt/lib/libmugirlstaulib.so]
 0x2aaac7581791 mugirlns::stautilecal::initcalocells(std::vector&lt;calocell const*, std::allocator&lt;calocell const*&gt; &gt;) ??:0   + 0x4a1 [/afs/cern.ch/atlas/software/builds/nightlies/devval/atlasreconstruction/rel_0/installarea/x86_64-slc5-gcc43-opt/lib/libmugirlstaulib.so]
 0x2aaac7582a93 mugirlns::stautilecal::stautilecal(mugirlns::stautool*, msgstream&amp;, rec::trackparticle const*) ??:0   + 0x1a3 [/afs/cern.ch/atlas/software/builds/nightlies/devval/atlasreconstruction/rel_0/installarea/x86_64-slc5-gcc43-opt/lib/libmugirlstaulib.so]
 0x2aaac75a045f mugirlns::stautool::initializecandidate(rec::trackparticle const*, std::vector&lt;muon::muonsegment const*, std::allocator&lt;muon::muonsegment const*&gt; &gt; const&amp;, std::vector&lt;mugirlns::mdtsegmentmakerinfo*, std::allocator&lt;mugirlns::mdtsegmentmakerinfo*&gt; &gt; const&amp;, std::vector&lt;std::vector&lt;trk::rio_ontrack const*, std::allocator&lt;trk::rio_ontrack const*&gt; &gt;*, std::allocator&lt;std::vector&lt;trk::rio_ontrack const*, std::allocator&lt;trk::rio_ontrack const*&gt; &gt;*&gt; &gt; const&amp;, std::vector&lt;std::vector&lt;trk::rio_ontrack const*, std::allocator&lt;trk::rio_ontrack const*&gt; &gt;*, std::allocator&lt;std::vector&lt;trk::rio_ontrack const*, std::allocator&lt;trk::rio_ontrack const*&gt; &gt;*&gt; &gt; const&amp;, trk::track const*, clhep::hep3vector) ??:0   + 0x1af [/afs/cern.ch/atlas/software/builds/nightlies/devval/atlasreconstruction/rel_0/installarea/x86_64-slc5-gcc43-opt/lib/libmugirlstaulib.so]
 0x2aaac75a3707 mugirlns::stautool::processstau(rec::trackparticle const*, std::vector&lt;muon::muonsegment const*, std::allocator&lt;muon::muonsegment const*&gt; &gt; const&amp;, std::vector&lt;mugirlns::mdtsegmentmakerinfo*, std::allocator&lt;mugirlns::mdtsegmentmakerinfo*&gt; &gt; const&amp;, std::vector&lt;std::vector&lt;trk::rio_ontrack const*, std::allocator&lt;trk::rio_ontrack const*&gt; &gt;*, std::allocator&lt;std::vector&lt;trk::rio_ontrack const*, std::allocator&lt;trk::rio_ontrack const*&gt; &gt;*&gt; &gt; const&amp;, std::vector&lt;std::vector&lt;trk::rio_ontrack const*, std::allocator&lt;trk::rio_ontrack const*&gt; &gt;*, std::allocator&lt;std::vector&lt;trk::rio_ontrack const*, std::allocator&lt;trk::rio_ontrack const*&gt; &gt;*&gt; &gt; const&amp;, trk::track const*, clhep::hep3vector, trk::perigee const*) ??:0   + 0x127 [/afs/cern.ch/atlas/software/builds/nightlies/devval/atlasreconstruction/rel_0/installarea/x86_64-slc5-gcc43-opt/lib/libmugirlstaulib.so]
 0x2aaabbaadc55 mugirl::execute() ??:0   + 0x1a95 [/afs/cern.ch/atlas/software/builds/nightlies/devval/atlasreconstruction/rel_0/installarea/x86_64-slc5-gcc43-opt/lib/libmugirl.so]
 0x2b41c98713d4 algorithm::sysexecute() ??:0   + 0x124 [/afs/cern.ch/atlas/software/builds/nightlies/devval/gaudi/rel_0/installarea/x86_64-slc5-gcc43-opt/lib/libgaudikernel.so]

could you havea look ? thanks, rolf