I have 2 IDE HD's, 1 WinXP and Ubuntu Feisty (Kernel 2.6.20-15.27 I am
still getting the Superblock Last Write Time was in the future. I was
testing on Edgy and hoped Feisty would fix this.

I have had an issue when the time change took effect in Edgy and now Feisty 
(2.6.20-15-27)
I get a Superblock Last Write was in the future on both / and /home.
running zdump, here's my output:

/etc/localtime Sun Mar 11 06:59:59 2007 UTC = Sun Mar 11 01:59:59 2007 EST 
isdst=0 gmtoff=-18000
/etc/localtime Sun Mar 11 07:00:00 2007 UTC = Sun Mar 11 03:00:00 2007 EDT 
isdst=1 gmtoff=-14400
/etc/localtime Sun Nov 4 05:59:59 2007 UTC = Sun Nov 4 01:59:59 2007 EDT 
isdst=1 gmtoff=-14400
/etc/localtime Sun Nov 4 06:00:00 2007 UTC = Sun Nov 4 01:00:00 2007 EST 
isdst=0 gmtoff=-18000

1) 'ntpdate' is installed by default in Ubuntu [Edgy] and there appears to be 
intent for it to run at boot; on the other hand 'ntpd' is not installed by 
default;
2) there are many reports of 'ntpdate' not running at boot-time though it 
appears it should; my own experience is the same, as was noted in a previous 
post:

- ntpdate, normally a "component" of ntp, is installed by default when
Ubuntu is installed, and it has several files related to it in /etc/*.
The code in one of those files, /etc/network/if-up.d/ntpdate, directs
ntpdate to run when the network becomes available (presumably during
boot); however, I could find no evidence by examining logs or tracing
the code back through various files that ntpdate actually ever runs (it
also is absent from the list of services when sysv-rc-conf is run from
the command line). As a final step, just to be sure for purposes of this
discussion, I set my clock incorrectly (- 10 minutes) and then rebooted.
The clock was not corrected, so I can confirm that ntpdate is not run
during boot.

NOTE: I was able to update the clock after login by issuing this command:
Code:
sudo ntpdate -u ntp.ubuntu.com

I chose the "-u" option and the server, ntp.ubuntu.com, because they are
specified in /etc/default/ntpdate, and I wanted to be clear that these
could be used successfully to update the clock.

** Local Time Tests

UTC Setting: UTC=No
Edgy Clock Preference Setting: UTC Time Not Selected (has no effect on system 
time, only affects display)
Time Zone: America/New_York

Time Synchronization In Edgy: None
- ntp(d) not installed
- ntpdate installed, but does not run (see post #90 for details)

Time Synchronization In Win XP 1 & 2: Off / Blocked
- Built-in sync is disabled / blocked at the firewall
- Time-sync nnchron jobs disabled during tests

(CT) Correct Time Prior To Conducting Tests: Edgy Display: 8:55 PM, 2007
03/17

Clock Reading After Reboot. Done To Establish Clock Times Relative To CT Before 
Proceeding
- BIOS: Matches CT Except For Elapsed Time ( 8:55 PM, 2007 03/17 )
- BootIT NG Boot Manager: Matches CT Except For Elapsed Time ( 8:55 PM, 2007 
03/17 )
- Win XP 1: Matches CT Except For Elapsed Time ( 8:56 PM, 2007 03/17 )
- Win XP 2: Matches CT Except For Elapsed Time ( 8:58 PM, 2007 03/17 )
- Edgy: Matches CT Except For Elapsed Time ( 9:00 PM, 2007 03/17 )

--------

* Local Time Test 1: Introduce 1 Hour Clock Error ( -1 Hour )

(T1_CT) Correct Time: Edgy Display: 9:07 PM, 2007 03/17
(T1_CTE) Correct Time + Error: Edgy Display: 8:07 PM, 2007 03/17

Clock Reading After Reboot
- BIOS: Matches T1_CTE Except For Elapsed Time ( 20:08 = 8:08 PM, 2007 03/17 )
- BootIT NG Boot Manager: Matches T1_CTE Except For Elapsed Time ( 8:08 PM, 
2007 03/17 )
- Win XP 1: Matches T1_CTE Except For Elapsed Time ( 8:08 PM, 2007 03/17 )
- Win XP 2: Matches T1_CTE Except For Elapsed Time ( 8:09 PM, 2007 03/17 )
- Edgy: Matches T1_CTE Except For Elapsed Time ( 8:11 PM, 2007 03/17 )

--------

* Local Time Test 2: Introduce Time Zone Change

Time Zone Changed From: America/New_York To America/Chicago
Equivalent UTC/GMT Offset for Time Zone:
- Standard time zone: UTC/GMT -6 hours
- Daylight saving time: +1 hour
- Current time zone offset: UTC/GMT -5 hours
- Time zone abbreviation: CDT - Central Daylight Time

(T2_CT) Correct Time: Edgy Display: 9:28 PM, 2007 03/17
(T2_CTZ) Correct Time + Zone Change: Edgy Display: 8:28 PM, 2007 03/17

Clock Reading After Reboot
- BIOS: Matches T2_CTZ Except For Elapsed Time ( 20:29, 2007 03/17 = 8:29 PM, 
2007 03/17 )
- BootIT NG Boot Manager: Matches T2_CTZ Except For Elapsed Time ( 8:29 PM, 
2007 03/17 )
- Win XP 1: Matches T2_CTZ Except For Elapsed Time ( 8:29 PM, 2007 03/17 )
- Win XP 2: Matches T2_CTZ Except For Elapsed Time ( 8:31 PM, 2007 03/17 )
- Edgy: Matches T2_CTZ Except For Elapsed Time ( 8:33 PM, 2007 03/17 )

--------

* Local Time Test 3: Change BIOS Clock Directly ( + 1 Hour )

(T3_CT) Correct Time: Edgy Display: 2:19 AM, 2007 03/18
(T3_CTBIOS) Correct Time: BIOS: 02:19 AM, 2007 03/18
(T3_CTEBIOS) Correct Time + Error: BIOS: 03:19 AM, 2007 03/18

Clock Reading After BIOS Clock Change
- BootIT NG Boot Manager: Matches T3_CTEBIOS Except For Elapsed Time ( 3:20 AM, 
2007 03/18 )
- Win XP 1: Matches T3_CTEBIOS Except For Elapsed Time ( 3:20 AM, 2007 03/18 )
- Win XP 2: Matches T3_CTEBIOS Except For Elapsed Time ( 3:21 AM, 2007 03/18 )
- Edgy: Matches T3_CTEBIOS Except For Elapsed Time ( 3:23 AM, 2007 03/18 )

The same is Occuring in Feisty,

-- 
Superblock last write time is in the future
https://bugs.launchpad.net/bugs/64123
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