Hy deathromantik,
32 bit and 64 bit Versions are using the same config files. So kmail e.g. is the same in both versions. I just updated from 32 bit to 64 bit keeping my /home ( which is on a seperate partition) . I didn´t notice any relevant changes or problems. But I noticed that the 64 bit version is notably starting faster 
Common programs are meanwhile available for 64 bit as well.
Bernd
I agree with you. It can be done. It can work because of the reasons you mention. But it can also cause problems at some point.
What if something messes up on one of the two installs? The mess will be carried to the other install too.
Is that what you really want?
Exactly what did you contemplate messing up? If one backs up their .
<directories> and .
<files> everything is fixable with a simple copy/paste from the backup. I'm currently sharing a /home partition between two PCLinuxOS installations without any problems, but for most of my installations I have a /home/polack directory on the / partition, (
copied from a single source, to both 32bit and 64bit installations, so all my bookmarks and personal settings remain the same) with all my personal data on separate partitions mounted in the same relative location on each, so it's always accessible from a known, and relatively fixed, location. All my mounted partitions are specified in my /etc/fstab, and I share the same /etc/fstab between all of the installations, with only the / partition edited for each. I've been doing this for years and have yet to lose anything due to "messing up".
[root@fatman ~]# cat /etc/fstab# Entry for /dev/sdc15 :
LABEL=64RC / ext4 defaults,noatime 1 1 <--- This line gets edited as to the LABEL=<whatever>
LABEL=HOME64 /home ext4 defaults,noatime 1 2 <--- This line gets commented out for those with /home/polack on the / partition
LABEL=TR5-Documents /home/polack/Documents ext3 rw,user,noauto,exec,noatime 0 0
LABEL=Documents2 /home/polack/Documents2 ext3 rw,user,noauto,exec,noatime 0 0
LABEL=DL-1 /home/polack/Downloads ext4 rw,user,auto,exec,noatime 0 0
LABEL=VDI /vdi ext4 rw,user,auto,exec,noatime 0 0
LABEL=share1 /share1 ext4 rw,user,auto,exec,noatime 0 0
LABEL=SHARE2 /share2 ext4 rw,user,auto,exec,noatime 0 0
LABEL=share9 /share9 ext3 rw,user,auto,exec,noatime 0 0
LABEL=movies /movies ext3 rw,user,auto,exec,noatime 0 0
LABEL=movies2 /movies2 ext3 rw,user,auto,exec,noatime 0 0
LABEL=storage00 /zstorage00 ext3 rw,user,noauto,exec,noatime 0 0
LABEL=120backup /zbackup ext3 rw,user,noauto,exec,noatime 0 0
LABEL=boot2000 /mnt/boot ext3 rw,user,noauto,exec,noatime 0 0
LABEL=REPO /repo ext4 rw,user,auto,exec,noatime 0 0
none /proc proc defaults 0 0
# Entry for /dev/sdc2 :
LABEL=swap2000 swap swap defaults 0 0
# Entry for /dev/sda2 :
LABEL=swap1000 swap swap defaults 0 0
# Entry for /dev/sdb2 :
LABEL=swap750 swap swap defaults 0 0
none /dev/pts devpts mode=0620 0 0
/dev/fd0 /mnt/floppy auto rw,user,noauto,exec 0 0
/dev/cdrom /mnt/cdrom auto ro,user,noauto 0 0
/dev/dvd /mnt/dvd auto ro,user,noauto 0 0
# none /dev/shm tmpfs defaults 0 0
