The Recycle Bin on C:\ is Corrupted. Do you want to empty the Recycle Bin for this drive?

This worked for WINDOWS 7 Machines.

Go to Command Prompt:

C:\>rd /s c:\$Recycle.Bin
C:\$Recycle.Bin, Are you sure (Y/N)? --> Y (hit enter)
C:\>

then reboot, Windows automatically makes a new empty recycle bin:

for those with other OS's you need to know the name of you recycle bin it could be recycled or recycler check your properties tab for the recyle bin folder for the folder name then go to command prompt and just substitute the correct name

i.e.
C:\>rd /s c:\recycler
C:\recycler, Are you sure (Y/N)? y
or C:\>rd /s c:\recycled
C:\recycled, Are you sure (Y/N)? y

if you type in the wrong name you will get "The system cannot find the file specified."
then you need to go back and find out for sure what your folder name is.

NOTE OF WARNING: if you do this everthing in your recycle bin will be deleted permantly

Network printer is showing offline and is not printing

This issue occurs if the printer spooler is corrupt. Please follow the steps below to reset the spooler.

Reset Spooler

1. Click Start, click Run, type "Services.msc" (without the quotation marks) in the open box and click OK.
2. Double-click "Printer Spooler" in the Services list.
3. Click Stop and click OK.
4. Click Start, click Run, type "%WINDIR%\system32\spool\printers" in the open window, and delete all files in this folder.
5. Click Start, click Run, type "Services.msc" (without the quotation marks) in the open box.

Another possible cause is your security programs. They may block the some ports that you are using to communicate with the printer. I suggest that you temporary disable all of them and then check the result again.

social.technet.microsoft.com

How to Manually Start OST Compaction

Method 1: Microsoft Office Outlook 2007

1. Delete any items that you do not want to keep, and then empty the Deleted Items folder.
2. On the Tools menu, click Account Settings.
3. In the list, select Microsoft Exchange Server, and then click Change.
4. Click More Settings.
5. On the Advanced tab, click Offline Folder File Settings.
6. Click Compact Now.

Method 2: Microsoft Office Outlook 2003 and earlier versions of Outlook

1. On the Tools menu, click to select E-mail Accounts.
2. Click View or change existing e-mail account, and then click Next.
3. Click Microsoft Exchange Server, and then click Change.
4. Click More Settings.
5. On the Advanced tab, click Offline Folder File Settings.
6. Click Compact Now.
7. When the compact operation is finished, click OK twice.
8. Click Next, and then click Finish.

Method 3: Microsoft Office Outlook 2010

1. Delete any items that you do not want to keep, and then empty the Deleted Items folder.
2. Click the File tab on the Ribbon, and then click the Info tab on the menu.
3. Click the Accounts Settings tab, and then click Account Settings again.
4. In the list, select Microsoft Exchange Server, and then click Change.
5. Click More Settings.
6. On the Advanced tab, click Offline Folder File Settings.
7. Click Compact Now.

Microsoft Support

Turn off AutoComplete name suggesting in OUTLOOK

1. On the Tools menu, click Options.
2. On the Preferences tab, click E-mail Options, and then click Advanced E-mail Options.
3. Clear the Suggest names while completing To, Cc, and Bcc fields check box.

How to increase Virtual Memory?

In Windows XP

1. Click Start, and then click Control Panel.
2. Click Performance and Maintenance, and then click System.
3. On the Advanced tab, under Performance, click Settings.
4. On the Advanced tab, under Virtual memory, click Change.
5. Under Drive [Volume Label], click the drive that contains the paging file that you want to change.
6. Under Paging file size for selected drive, click to Custom size check box. You can enter the amount of memory you would like to reserve for Virtual memory by entering the initial and maximum size.
7. Click Set, When you are prompted to restart the computer, click Yes.
   

Special Note: You should choose the same amount for the initial size and maximum size. This will Stop your CPU from constantly changing the paging file.

HOT TIP: To stop your CPU from constantly changing the paging file, set the initial and maximum size to the same value. For example, 500 and 500. The value should be at least 1.5 times more than your physical RAM. If your computer has 512MB of RAM increase the virtual memory paging file to 1.5*512= 768