I have a link on a page, which refreshes this page when clicked.
How can I verify with Selenium-IDE that the page has really been refreshed/reloaded?
Simple way is to wait until last element on page.
In Selenium-IDE you may use a lot of wait*-commands to do this, for example:
waitForElementPresent [element_xPath]
waitForVisible [element_xPath]
and so on.