You might never know it, but sometimes the problems of Internet Explorer freezing up lies within your PC itself. The problem could lies within your RAM. RAM or also known as Random Access Memory is a component in your computer that stores all the necessary data that is needed to run programs and things alike. What happens is that if you have a puny RAM, then quite possibly you will have to face the problem of a laggy computer and freeze ups more often. To solve this problem, simply install more RAM, if your computer is equipped for it. However, just be prepared, you may have to invest a hefty sum of money for good quality RAM (direct from your PC manufacturer).
When something goes terribly wrong, it also good to do a simple virus scan or spyware scan. These scans are necessary as sometimes errors that are present in the PC, are due to these pesky virtual pests that can destroy your PC. So keep a virus and spyware scan software on your computer at all times.