continous

Friends....plz have a look at my blog *windows-registry-editor.blogspot.com/ There is a huge gap in between Blog Rolls and Tech Global.Com widget..... I don't know how this space is comming....and I want to remove that space so that the widgets are continous.... So plz....help...

when ever i am in my favourite chat room one guy there troubles me by sending some continous instant messages and this leads to hangdown of my system then i have to restart it please suggest a solution or a software to block these continous messages that leads to hanging down of my system...