Inserting links in text

When my blog was first set up a few months ago I could insert hyper links using the ‘linked chain’ icon – in the last few days each time I try to insert a link the box that appears just freezes. After a few seconds if I pass the mouse over the insertion box the mouse usually ‘sticks to’ the box and now the mouse is stuck on the box – nothing can be done except closing WP and reopening.

Any suggestions anyone – at this point I can’t insert any hpyer links into my text. I know there is a manual method but I’d prefer not have to use it as it is more time consuming (and I don’;t know how to do it)

In hope

Steve J