Toilets never leak around the base - they leak from higher up and the water collects around the base.
If it's a close-coupled Cistern / WC the join between the two sometimes leaks a bit when it's flushed. At the back pointing downwards will be two bolts with wing nuts - one each side. You can often fix this type of leak just by tightening the wing nuts - there's a big round squidgy washer that makes the seal - called a donut washer - tightening the wing nuts pulls a metal plate down onto the donut washer squashing it a bit more.
Good luck...
Peccavi
November 2009
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix toilets.