What is your computer configuration, ie: total ram & speed? Try the Bug Report (click on link for instructions & sample) & tell us whether your result is True or False.
You mentioned earlier on your files are 'Awaiting Sources'. This suggests that you've forced resumed your files. Yes this technique can be very effective. But, if you do it to all your files, you'll find that they queue up for much, much longer than normal. You'll also have status's of 'Waiting #s for Sources'. What happens is they all send out searches for sources every few mins over & over until they eventually give up trying (& then show 'Awaiting Sources' status.) With so many, it can play havoc with your connection quality & steal much/most of your bandwidth. It is highly possible this is why you're having problems with Safari.
The best way is to search manually. I'll give you some tips after you reply about your incoming test.