Quite often when I look at a XOOPS site it doesn't load cleanly. The contents of block may not appear, or shoot off to the side of a page, or the cells in a table may not align cleanly (see this example screenshot). If I click 'refresh' the page usually displays normally.

Do other people experience this, and if so, can anyone tell me why it happens (and if it is preventable) ?

It happens on most of the XOOPS sites that I frequent, including my own. It happens in both IE and Mozilla browsers, and on different computers.

Thanks

Simon