[daip] aips zerrors for a particular user number

[Cammisa Joseph]

hello.  our aips users here have today experienced an unusual problem:
one (and only one, as far as they've seen) user sees zerrors upon starting
the program and entering his aips number.  he is subsequently left with a
"dead" session and cannot execute any tasks or see any of his data (which
is still visible in unix, so i presume it's still there).  the error
messages he sees look like this:

AIPS 1:                          31DEC02 AIPS:
AIPS 1:      Copyright (C) 1995-2002 Associated Universities, Inc.
AIPS 1:            AIPS comes with ABSOLUTELY NO WARRANTY;
AIPS 1:                 for details, type HELP GNUGPL
AIPS 1: This is free software, and you are welcome to redistribute it
AIPS 1: under certain conditions; type EXPLAIN GNUGPL for details.
AIPS 1: Previous session command-line history *not* recovered.
AIPS 1: TAB-key completions enabled, type HELP READLINE for details.
AIPS 1: ZFIO: OPER = READ LUN = 27 NREC =      129
AIPS 1: ZFI2: REQUEST FOR BYTES 131073 THRU = 132096 BEYOND EOF = 131072
AIPS 1: ZERROR: IN ZFI2   ERRNO = 22 (Invalid argument)
AIPS 1: DISK PROBLEM   CODES:       3      0
>4
AIPS 1: INTERP: STACKS NOT EMPTY WHEN LINE DONE
>ucat
AIPS 1: SYMBOL?       UCAT
>task 'uvplt'
AIPS 1: SYMBOL?       TASK
>

have you seen this sort of problem before?  would you kindly have any
suggestions on what i might do to help them out?

if there is other information i can provide to you on this matter, just
ask.  as always, thanks muchly in advance for your time and attention.

-joe
---------------
Joe Cammisa
Haverford College
610-896-4239