LHC@home

I recently changed operating system from Win XP to Fedora Core 4, but now all my LHC units fail with the following code:

core_client_version>4.43 /core_client_version
message process exited with code 240 (0xf0)
/message
stderr_txt
boinc_init() 4.65
jwe0019i-u The program was terminated abnormally with signal number SIGSEGV.

Error occurs at sin_rn
Called from sin_rn_
Called from or near line 2431 of thin6d_
Called from or near line 793 of trauthin_
Called from or near line 5305 of MAIN__
error summary (Fortran)
error number error level error count
jwe0019i u 1
total error count = 1

/stderr_txt

Please, can anyone tell me what's wrong here? The error happens 30 sec to 5 min into the unit. I run Einstein without any trouble (and have for a couple of weeks). I am a total Linux newbie :-(

Thanks,
Kenneth