If you've been experiencing slow-loading forums at PrimeGrid, or, for that matter, any BOINC project's forums, the reason is because the Free-DC website has been down a lot recently.
Many people use forum signature images from Free-DC, which your browser loads when it displays forum messages. If Free-DC is down, your browser has to wait for the image request to Free-DC to time out. That's why the forum pages load slowly.
If you want forum pages to load more quickly, go to the Community Preferences page and check the "hide signatures" box. Don't forget to click on the "Update" button at the bottom.
Please do not PM me with support questions. They will usually go unanswered. Ask on the forums instead. Thank you!
My lucky number is 75898^524288+1