The User Profile Service failed the logon. User profile cannot be loaded

Another big problem appeared today with Vista. What new? I got the 'The User Profile Service failed the logon. User profile cannot be loaded' error message. What the heck is that? Oh well off online to check for solutions. I couldn't find something that was giving me a definate answer.

As time was getting by i was getting angry. When suddenly i saw something on the account i was trying to log in. It had became 'backup'. Hmmm. Lets go on the registry to see what that meant.

I navigated to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList and I checked the SID for that account. At the end of the string had a '.bak' to it and above it the same SID without the .bak extention. So i deleted the one WITHOUT the .bak and I renamed the one WITH the .bak not to include the extention.

And VOILA the problem was fixed. Hope this helps to anyone with the same problem.

Fixing slow Windows Explorer copy in Vista

OK i thought i had finished with tinkering on vista. I was wrong! More problems arised. 'Great', i thought, 'what else?'. This time the Windows Explorer was freezing up while copying or going through directories on a network drive. I was puzzled? The machine had a 1 Gbit NIC! Switch was 1 Gbit too. What's the problem?

I went through alot of web sites to find out a solution and as i was searching for answers i found 2-3 web sites that were refering to the same problem with different solutions to it.

With alot of trial and error i found out that if i do the following the system became alive again.

1) Disable the autotuning, as per previous entry.
2) Disable indexing on the computer. Not crucial but hey why not?
3) Disable Remote Differential Compression.
To do that go to Control Panel, click Program and Features, click on Turn Windows
features on and off, and untick the Remore Differential Compression checkbox.
4) Open Control panel again, go to Network and Sharing Center, click Manage Network Connections. Right click your Local Area Connection and click Properties. On the new screen that appears click the Configure button under your NIC card. Click Advanced and select Speed & Duplex. By default will say Autonegotiate. Depending on the NIC it will have some values. On mine i selected 100 Mbps Half Dublex.

And that was it. The computer seems a bit speedier to respond but with a drop of actual speed from 1000 Mbps. Oh well. You win some, you lose some.