I finally found it’s due to the remote desktop application “LogMeIn”. It installed another display adapter driver on my computer. Disable it, and everything will be OK.

Run command in command window: net stop wuauserv

ILLEGAL ATTEMPT TO ASSOCIATE A COLLECTION WITH TWO OPEN SESSIONS in nHibernate.

Session.Evict(object o) can make the object detached, which can solve this problem.

This problem will happen if you use trigger in one table.

Set NOCOUNT ON in trigger will solve the problem,

The way to solve this problem is to clear all proxy setting in your IE, sorry for the Chinese version, but I’m sure that you know how to arrive this window.

Perhaps MS will solve it in the future.

You can also refer to this link http://www.liveside.net/2010/06/25/essentials-installer-waitforcatalog-error-workaround/

Balsamiq is a mockup tool which can enable you Create software mockups in minutes.

Today, I need to provide a UI prototype to my client. At the beginning, I preferred to use Visio, but suddently I realized, depends on my former experience, it may not be a quick and decent way to draw a web page by using Visio.

Balsamiq stayed in my computer for quite a long time, but I never use it to drew the diagram and show it to my client. Why not try it today?:)

After 5 mintues, the Balsamiq proved my suppose. It only spends me 5 mintues to finish a prototype like this:

I believe that Balsamiq is fairly suitable for those people who do not have a plenty of time to draw a precise picture. It can reduce your workload significantly, and help you focus on the production delivery.

Here is the link:http://www.balsamiq.com/

ou could try to remove google desktop add-in in outlook 2007 if you feel the outlook is abnormally slow.

I believe the problem could be credited to the background action by google desktop search.

Update at 20100423, one topic proves my guess.

https://mediawiki.middlebury.edu/wiki/LIS/Google_Desktop_and_Outlook_Issues

Outlook is unresponsive or slow and gives a warning bubble

Message from Outlook: “Microsoft Outlook is Requesting data from the server.” or “Trying to retrieve data…”

This can happen if Google Desktop is installed. Here’s a brief explanation and some helpful tips: Unfortunately, with large volume of mail, Google Desktop spends more time indexing and re-indexing, and to do this it briefly takes over the connection to the exchange server. this is why Outlook is giving the message.

There is no known solution for this. What helps:

disable other Outlook add-ins (I disabled the iTunes add-in)

install the latest version of Google Desktop

if you need to use outlook for a time and not be bothered by the message, run outlook in safe mode (See Running Outlook in Safe Mode. Note that new messages are not indexed while outlook is in safe mode.

decreasing the number of messages / folder (not necessarily deleting them, but splitting them up in different folders, such that there is less than 1000/folder)