Superduper stalls on Macbook

[ben10friend]

I am trying to get SD to work on my wife's Macbook. After some problems with stalling (for which I never was able to locate the log file), I got it to work once. However, when I tried a smartupdate, that stalled. When I zeroed out the drive, it stalled again (but in a different place).

Here is the latest log file (from an attempt at a basic backup):

Mac OS X Version 10.4.10 (Build 8R2218)
2007-07-25 23:18:06 +0800
2007-07-25 23:18:11.214 SystemUIServer[213] lang is:en
2007-07-25 23:18:15.036 MagicMenuHotKeyDaemon[237] Started
crontab: no crontab for Administrator
Jul 25 23:19:05 admin-accounts-computer authexec: executing /Applications/
Utilities/SuperDuper!.app/Contents/MacOS/SDAgent
Jul 25 23:19:37 admin-accounts-computer mDNSResponder: getifaddrs
ifa_netmask for fw0(7) Flags 8863 Family 2 169.254.151.210 has different family:
0
Jul 25 23:19:37 admin-accounts-computer mDNSResponder: SetupAddr invalid
sa_family 0
Jul 25 23:19:41 admin-accounts-computer mDNSResponder: getifaddrs
ifa_netmask for fw0(7) Flags 8863 Family 2 169.254.151.210 has different family:
0
Jul 25 23:19:41 admin-accounts-computer mDNSResponder: SetupAddr invalid
sa_family 0
Jul 25 23:43:04 admin-accounts-computer /Applications/Utilities/SuperDuper!.app/
Contents/MacOS/SuperDuper!: __CGPixelAccessLockWindowAccess: access lock
failed: error 1001.

My setup: Macbook attached to a WD passport 160 GB USB2 HD (partitioned into two 80 GB partitions). When the backup starts, it begins at 4.36 MB/s. When I tried the smartupdate, it stalled before any files were processed.
I have a couple of accounts on this computer but I run SD from the administrator account. One other account is a Filevault account. Between the time I did a successful backup to the latest attempt, I installed Parallels and upgraded to 3.0.

Thanks for your help!