Computer dead (sbod) after losing webDAV connection

_The scenario:_
To not have to put the memory card of my mobile (Nokia E70) into a card reader, use a cable or transfer several 100 MB using Bluetooth, I am using Apache (raccoon) on the mobile to supply a WebDAV service and connect my iMac 2.16 OSX 10.4.11 with this share point using WLAN. This usually works fine, my SD card is visible like any other volume on the Mac and accessible at a reasonable speed.
_The problem:_
a) If I forget to unmount (eject) the WebDAV drive before turning off WLAN and stopping Apache, the Mac hangs as soon as I try to do anything concerning that volume. It ask if it should eject - but it never does. It results in a spinning beach ball of death. It is also not possible to restart the computer, it seems to wait for that volume to get ejected. There is no timeout, I waited several hours. Trying to restart Finder gives the answer: Couldn't start application Finder (Error -600). Only help is to press Power for some seconds to turn the computer off hard.
b) Accepting a) I was careful not to forget to unmount. Now there seems to be another restriction: Multiple copies at the same time also cause the bad behavior. This means my workarund doesn't help for sure.
_The questions:_
1) Is there a solution for my problem using Tiger? It would perfectly acceptable for me to reconnect. But I don't want to restart the Mac.
2) Would an update to 10.5 Leopard help?

Thank you for the fast answer.
The cause for the problem (at least in this case) was not that a Mac went to sleep, but that the Apache server on the mobile a) was turned off by me b) didn't cope fine with more than one copy act (at least I assume it was server's fault).
"Leopard is more forgiving" is very general, I can't judge by this statement if Leopard could help in my case. Is it more forgiving using file shares and having timeouts, or does it handle sleep mode better (this wouldn't help me at all), or does it contain changes regarding WebDAV?
I am aware that I should run disk maintenance. But as OSX doesn't seem to have write caches without timeouts like system 7-9 had I didn't do it every time as I waited long enough before turning off. Additionally OSX already does some kind of file system check when initializing. But thank you for this hint, will do it as a precaution.
Did search for processes that seem to hang when it happened. Didn't find it.

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Welcome to the HP Forums!
I understand that you cannot scan to computer, and that you are losing wireless connectivity, with your HP Officejet pro 8600 Plus. I am happy to help you with this issue!
Please take a look through this wireless guide. Printer Does Not Maintain Wireless Connection.
For the scanning, please see this guide. A 'Connection Error' or 'No Computer Detected' Error Message Displays during Scanning.
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RnRMusicMan
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos Thumbs Up" to say “Thanks” for helping!

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Start Date                09-MAY-2007 15:09:52
Uptime                    0 days 0 hr. 0 min. 53 sec
Trace Level               off
Security                  OFF
SNMP                      OFF
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Message was edited by:
Madrid

Computer dead (sbod) after losing webDAV connection

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