Network shares not accessible in Windows 2008

I have recently installed Windows server 2008. After that upgraded it as a Domain controller. (more information will come in future about this) Since after that our internal users have
experienced network /connection problems to the server.
At least once a day I must reboot the server so that users can access the shared folders in the server. Since I host a database in this machine this problem has become a real headache and a panic to me.

Users with offline files get notice that they are no longer connected to the server. They can't sync etc.
When this happens you can still ping the server. Remote desktop to the server works 100% and the server seems to be working without any error.Tested the cabling and all the links passed the tests.

So finally found out the problem relates to Symantec EndPoint protection anti virus software. I've been using ver 11 MR2. Further digging into this matter came up with the below mention article released by Symantec

http://service1.symantec.com/support/ent-security.nsf/docid/2008061812370848?Open&seg=ent

Apart from that Microsoft has acknowledged this problem can occur if you're having outdated NIC driver.

After removing the AV software users back to business. I guess I'll have to test out the latest version of the Symantec (MR3) and then see if that solved the problem. Will update you all once I get my hands into SEP MR3 version.

Installing Ubuntu 8.10 To A USB Flash Drive

ONE of the features of Ubuntu 8.10 I have overlooked in my recent review was the utility included for creating a bootable version of Linux OS on a USB Flash memory stick.
Personally I love the idea of having a whole operating system on a memory stick - it appeals to the geek in me and I love the look on a non-geek's face when you boot up their machine and your operating system comes up instead of theirs!
But one of the issues I have frequently come across with such pocket-sized OSes is, how to make them persistent ie. getting any changes you make in the live environment to remain for your next boot.
With the latest version of Ubuntu, however, everything you need is included in the GNOME menu - just look in System>Administration>Create a USB startup disk (this was also available in Ubuntu 8.04).
The procedure to get Ubuntu installed, working and persistent is really very simple indeed.

1. Download the Ubuntu 8.10 ISO and burn it to a CD
2. Restart your computer, booting from the Live CD
3. Insert a 1GB or larger USB flash drive
4. Navigate to System>Administration>Create a USB startup disk
5. Next, select the USB disk to use, select the option 'Stored in reserved extra space' and adjust the sider to set the capacity you wish to use (I set mine at 2GB on an 8GB stick), then click the 'Make Startup Disk' button. It is not a fast process, so go and make a coffee
6. Once the installation is complete, simply remove the CD, restart your computer and set your boot menu or BIOS to boot from the USB device.

This last step will vary according to how you BIOS is set up, but on my machine it was a case of holding down the F2 button during the boot process, then editing the Boot Devices section to make sure USB came first, followed by CD then HDD.
And that, basically, is it. Thanks to Ubuntu's inclusion of the application Casper, any subsequent changes you make or data you create will be saved in the slice of the flash drive you created during step 5.
So as you can see this feature will become very handy if you want to help someone to recover files in his/her computer when things go wrong.

Windows XP and Vista also can be customized like this but not for the USB level but as bootable cd/DVD. BartPE is a good place to look into how to part.