Every single S5R4/S5R4a task is resulting in "client errors"

I have two different computers running this program and both have the same problem. Of my last 9 E@H projects, ALL of them have come up "Client Error". Einstein is the only project that has had this issue, I'm running 5 others (WCG, SETI, Rosetta, etc.) that have no errors or no unusual frequency of them. I lowered my E@H resource share to almost nothing because it is such a waste of compute time.

All of the tasks have been S5R4/S5R4a as well, if that makes a difference. Here are the computers:

Comp1:

GenuineIntel
Intel(R) Core(TM)2 Duo CPU T9300 @ 2.50GHz [x86 Family 6 Model 23 Stepping 6]
Number of CPUs 2
Operating System Microsoft Windows Vista
Home Premium x86 Editon, Service Pack 1, (06.00.6001.00)
Memory 3581.05 MB

Comp2:
GenuineIntel
Intel(R) Pentium(R) 4 CPU 3.20GHz [x86 Family 15 Model 4 Stepping 3]
Number of CPUs 2
Operating System Microsoft Windows XP
Professional x86 Editon, Service Pack 3, (05.01.2600.00)
Memory 2046.09 MB

Should I post part of the STDERR log to help diagnose? Can someone explain to me the importance of setting CPU time to 100% and how this could affect it? I do have both set to less because when they're at 100%, my system bogs a bit and the fans are running constantly. I don't like the CPU's getting so hot, especially on my laptop. If I had to guess though, it would seem the error is either in the data sets or in my preferences, since it affects both systems. I've already turned off the BOINC screen saver, didn't seem to help.

I've only got one E@H task running on each comp right now, and each is a long one (one's been computing for 25 hours, the other for 7, but if either of these fails, with no clear fix, I'm detaching :(

Here's an example of a portion of one STDERR file in case it helps:

Server state Over
Outcome Client error
Client state Compute error
Exit status -226 (0xffffffffffffff1e)
Computer ID
Report deadline 22 Jan 2009 13:22:48 UTC
CPU time 18196.8
stderr out

6.2.19

too many exit(0)s

20.9499 [debug]: Set up communication with graphics process.
2009-01-04 18:20:21.2950 [debug]: Reading SFTs and setting up stacks ... done
2009-01-04 18:23:02.5339 [debug]: Successfully read checkpoint
2009-01-04 18:23:02.5349 [debug]: Total skypoints = 843. Progress: 162,
$Revision: 1.131 $ REV:$Revision, OPT:6, SCVAR:9, SCTRIM:2, HOTVAR:4, HOTDIV:0, HGHPRE:7, HGHBAT:2
c
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193, 2009-01-04 20:52:18.2821 [normal]: This program is published under the GNU General Public License, version 2
2009-01-04 20:52:18.2851 [normal]: For details see http://einstein.phys.uwm.edu/license.php
2009-01-04 20:52:18.2861 [normal]: This Einstein@home App was built at: Jul 27 2008 15:34:32

2009-01-04 20:52:18.2871 [normal]: Start of BOINC application '..\..\projects\einstein.phys.uwm.edu\einstein_S5R4_6.04_windows_intelx86_1.exe'.
Unrecognized XML in parse_init_data_file: computation_deadline
Skipping: 1232618328.000000
Skipping: /computation_deadline
2009-01-04 20:52:18.5511 [debug]: Set up communication with graphics process.
2009-01-04 20:52:18.8931 [debug]: Reading SFTs and setting up stacks ... done
2009-01-04 20:54:50.4121 [debug]: Successfully read checkpoint
2009-01-04 20:54:50.4131 [debug]: Total skypoints = 843. Progress: 193,
$Revision: 1.131 $ REV:$Revision, OPT:6, SCVAR:9, SCTRIM:2, HOTVAR:4, HOTDIV:0, HGHPRE:7, HGHBAT:2
c
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223, 2009-01-04 22:59:54.1001 [normal]: This program is published under the GNU General Public License, version 2
2009-01-04 22:59:54.1021 [normal]: For details see http://einstein.phys.uwm.edu/license.php
2009-01-04 22:59:54.1031 [normal]: This Einstein@home App was built at: Jul 27 2008 15:34:32