Hitting the search function or the members function often results in a blank white screen.
When a search is successful, clicking on one of the findings, or on a link to another page of the findings (bottom right) results in a blank white screen.
If doing a google search specifiying this site, a link to a finding results in a blank white screen. Interesting, many of the results that google finds will have a title like "Windows 7 For College Students Discount â€” Sale -186% price" even though the preview text clearly is from a post.
These results have been replicated with Internet Explorer, Mozilla Firefox, on Linux, Mac, and MS products.