Is Samba4 Included in turnkey linux 11.04 domain controller appliance?

Because I have successfully configured, and setup samba4, on turnkey linux core 10.04 lts beta, and I was wondering if how I would upgrade my operating system, without doing a clean install? and keeping all of my stuff?

[ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -type f -cmin +$(/usr/lib/php5/maxlifetime) -print0 | xargs -r -0 rm

What is this? what does it do? Is it necessary?

Googled quite a bit but still unsure so i come back here... 

What settings could I use to optimize MySQL and Apache on a server with a Quad core and 4GB RAM? Goal would be to have up to 80 simultaneous users.

On my Dell Power Edge 1800 Server every time I attempt to install Zimbra I get an error message when it reads the HDD's in my SCSI bays at 41% scanning. I am wondering if anyone has a fix for this, all other TKL distros seem to work just fine. is there a way to install the core to the server and download an executable patch to install the ZImbra after the fact?

Just intstalled otrs with the turnkey-otrs-11.0rc-lucid-x86.iso . All
went perfect but if i trying to use the paketmanager

https://192.168.178.145/otrs/index.pl?Action=AdminPackageManager

is got an error:
ERROR: Need write permission in OTRS home
Try: $OTRS_HOME/bin/SetPermissions.pl !!!

For help, please send mail to the webmaster (webmaster@localhost),
giving this error message and the time and date of the error.

We have installed TKL LAMP vm on our host server. It all worked fine for the first week. It now keeps crashing every now and then. Not sure what the reason is. We can't find anything in the logs. We have to reset it each time in Vsphere client.

Anything that could cause this?

is there any simple way to back up /var/www to a speciifed location? i already set up mysql to backup wit hcron. any equivalent for www? THANSK!

on TKL, apache is set by default to /var/www. is this the folder to use? is this safe?

Hi, the turnkey TWiki version is 4.1.2 i believe. Has anyone succesfully upgraded it to 4.3 or even 5.0 ?

if so, did you follow the standard instructions as per twiki.org and/or anything special ?

thanks

Hi i can't seem to install plugins via the Configure page (Find More Extensions). It always complains for example with more or less the same error (Archive::Tar not installed and then the path issue at the end):