Knowing these can help you and your doctor identify the cause of your lightheadedness and the best way to rid yourself of it. 1  If you are over the age of 65 years, you are more likely to have a medical condition or take medications that causes lightheadedness.n fact, you can usually figure out the cause of lightheadedness based on the sensations you are feeling. Knowing the cause will also give you a clue of how best to get rid of your lightheadedness.
Difference between MS Outlook OST & PST files. OST stands for Offline Storage Tables. It is an offline folder created by MS Outlook and MS Exchange to hold offline copies of whatever exists in the Exchange server. To make it more simple to understand, you can just call OST files as as local copy of your Exchange mailbox. It is created when your emails are delivered to your Outlook mailbox and will contain all your emails, contacts, calender entries and tasks. Outlook has to be in Cached mode for Offline folders to work.
By default, Personal Folders (.pst) and offline Outlook Data File (.ost) files are in Unicode format in Microsoft Outlook 2010 and Outlook 2013.The overall size of .pst and .ost files has a preconfigured limit of 50 GB.This limit is larger than the limit for Unicode .pst and .ost files in Outlook 2007 and Outlook 2003. Make sure that your large .pst file and the destination .pst file are both open in Outlook. 2  Right-click the folder in your large .pst file that you want to move to the other (smaller) .pst file, and then click Move Folder. 3  In the Move Folder dialog box, select the destination .pst file, and then click OK.