[daip] IMAGR errors on Linux box

[Lynn D. Matthews]

I have begun to experience problems with my Linux machine running Fedora
Core that I am fairly convinced are caused by a hardware problem.
However, I am writing with the hope that the symptoms exhibited by AIPS
might yield some clue as to the origin of the problem, since so far I've
not been able to trigger them outside of AIPS.

The most dramatic problems occur when running IMAGR. Each time I do a
"tget" and rerun the program, I get different results and different
messages, including things like:

IMAGR1: UVWAIT: Sum of weights in  2.083E+32 and out Infinity

IMAGR1: Field 1 Beam min = NaN Jy, max = NaN Jy

IMAGR1: BEAM HISTOGRAM PATHOLOGICAL - DEALING WITH IT

IMAGR1: Field   1 min =  NaN        Jy,max =  NaN        Jy
IMAGR1: Restoring Clean components
IMAGR1: Checking image max/min
IMAGR1: Field    1 final Clean flux   131.076      Jy

Sometimes there will be no obvious complaints, but I might end up with
image headers like this:

AIPS 1: Image=BNKL-I    (MA)         Filename=TST         .ICL001.   5
AIPS 1: Telescope=VLBA               Receiver=VLBA
AIPS 1: Observer=BG118               User #= 2086
AIPS 1: Observ. date=18-MAY-2001     Map date=01-MAY-2007
AIPS 1: Pixel type: FLOATING         Magic value blanking
AIPS 1: Minimum=-2.78580113E+38      Maximum= 2.78580133E+38 JY/BEAM

Any idea whether this is likely to indicate a memory problem? A disk
problem? Checks we've done so far on both have been unable to pinpoint the
source.

uname -a shows:
Linux wrest 2.6.19-1.2895.fc6xen #1 SMP Wed Jan 10 19:47:12 EST 2007 i686
i686 i386 GNU/Linux

Thanks,

Lynn Matthews