[Nexus One Android Development] Chahk:
After running "a2sd nocache" (and taking a nandroid backup beforehand) here are the results.

a2sd check:

[ ] Apps2SD is launching...
__ _____
| \ |
| | |
|__/ | Darktremor Apps2SD 2.7.5.2 (2010-09-30)

[ ] GetProp Command = /system/bin/toolbox getprop
[ ] SetProp Command = /system/bin/toolbox setprop
[ ] Mount Point = /sd-ext
[ ] Starting Apps2SD Check Program.
[ ] Checking for ext partition

Darktremor 2.7.5.2 Apps2SD Status Report
===================================================================================
Legend: [*]=Setting is correct
[!]=Setting is correct, but not optimal.
[X]=Setting is incorrect and needs to be fixed or option is not available.
===================================================================================
Block Device - [*] Found
- [*] /dev/block/mmcblk0p2
EXT Partition - [*] Mounted
Mount Point - [ ] /sd-ext
Partition Type - [*] EXT2
Support EXT2? - [*] Yes
Support EXT3? - [*] Yes
Support EXT4? - [*] Yes

Apps - [ ] Linked to SD Card.
[ ] No Apps2SD Flag File not found.
[*] Programs run from SD card
To run from internal storage, type a2sd remove

Private Apps - [ ] Linked to SD Card.
[ ] No Apps2SD Flag File not found.
[*] Private Programs run from SD card
To run from internal storage, type a2sd remove

Dalvik Cache - [ ] Regular directory.
[ ] Dalvik to /cache flag file not found.
[ ] Dalvik to SD flag file not found.
[*] Dalvik runs from Int. Storage.
To run from SD card, type a2sd cachesd.
To run from /cache partition, type a2sd cachepart.

Swap - [ ] Partition not present or no swap support.
[*] Swap does not start.

ZipAlign - [*] Not running at boot.
To activate it, type a2sd zipalign

Dalvik Heap(MB) - [*] 32m

Low Memory
Killer Settings - [*] 1536,2048,4096,10240,12800,15360
Note: Values are in pages.
1 page = 4KB memory.

Values represent the following:
1st number = Foreground App
2nd number = Visible App
3rd number = Secondary Server
4th number = Hidden App
5th number = Content Provider
6th number = Empty App

df -h:

Filesystem Size Used Available Use% Mounted on
tmpfs 203.2M 0 203.2M 0% /dev
tmpfs 203.2M 0 203.2M 0% /mnt/asec
/dev/block/mtdblock3 145.0M 113.8M 31.2M 78% /system
/dev/block/mtdblock5 196.3M 170.2M 26.1M 87% /data
/dev/block/mtdblock4 95.0M 1.8M 93.2M 2% /cache
/dev/block/mmcblk0p2 457.4M 114.2M 318.7M 26% /sd-ext
/dev/block/vold/179:1
14.4G 7.5G 6.9G 52% /mnt/sdcard
/dev/block/vold/179:1
14.4G 7.5G 6.9G 52% /mnt/secure/asec

mount:

rootfs on / type rootfs (ro,relatime)
tmpfs on /dev type tmpfs (rw,relatime,mode=755)
devpts on /dev/pts type devpts (rw,relatime,mode=600)
proc on /proc type proc (rw,relatime)
sysfs on /sys type sysfs (rw,relatime)
none on /acct type cgroup (rw,relatime,cpuacct)
tmpfs on /mnt/asec type tmpfs (rw,relatime,mode=755,gid=1000)
none on /dev/cpuctl type cgroup (rw,relatime,cpu)
/dev/block/mtdblock3 on /system type yaffs2 (ro,relatime)
/dev/block/mtdblock5 on /data type yaffs2 (rw,nosuid,nodev,relatime)
/dev/block/mtdblock4 on /cache type yaffs2 (rw,nosuid,nodev,relatime)
/dev/block/mmcblk0p2 on /sd-ext type ext2 (rw,noatime,nodiratime,barrier=1,data=ordered)
/sys/kernel/debug on /sys/kernel/debug type debugfs (rw,relatime)
/dev/block/vold/179:1 on /mnt/sdcard type vfat (rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0702,dmask=0702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro)
/dev/block/vold/179:1 on /mnt/secure/asec type vfat (rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0702,dmask=0702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro)
tmpfs on /mnt/sdcard/.android_secure type tmpfs (ro,relatime,size=0k,mode=000)

ls -l:

drwxr-xr-x 3 root root 0 Oct 5 10:04 acct
drwxrwx--x 1 system cache 2048 Oct 5 10:04 cache
dr-x------ 2 root root 0 Oct 5 10:04 config
lrwxrwxrwx 1 root root 17 Oct 5 10:04 d -> /sys/kernel/debug
drwxrwx--x 1 system system 2048 Oct 5 10:05 data
-rw-r--r-- 1 root root 118 Dec 31 1969 default.prop
drwxr-xr-x 12 root root 1180 Oct 5 10:04 dev
lrwxrwxrwx 1 root root 11 Oct 5 10:04 etc -> /system/etc
-rwxr-x--- 1 root root 111768 Dec 31 1969 init
-rwxr-x--- 1 root root 1677 Dec 31 1969 init.goldfish.rc
-rwxr-x--- 1 root root 3564 Dec 31 1969 init.mahimahi.rc
-rwxr-x--- 1 root root 14303 Dec 31 1969 init.rc
drwxrwxr-x 5 root system 0 Oct 5 10:04 mnt
dr-xr-xr-x 107 root root 0 Dec 31 1969 proc
drwx------ 2 root root 0 Sep 5 20:14 root
drwxr-x--- 2 root root 0 Dec 31 1969 sbin
drwxrwxrwx 5 root root 1024 Oct 4 11:56 sd-ext
lrwxrwxrwx 1 root root 11 Oct 5 10:04 sdcard -> /mnt/sdcard
drwxr-xr-x 15 root root 0 Oct 5 10:04 sys
drwxr-xr-x 1 root root 2048 Oct 4 11:58 system

The reason for drop in /data size is me installing a couple of apps (OpenTable, Skype, and Cestos2). Other than that, it looks like the size didn't change much.