I did a search for something and started downloading a file with dozens of sources. It showed up as "Pending (3 sources)" or so in the transfers tab. Eventually it started downloading at a piddling 3kb/s. I repeated the search and it found 82 sources for the same file (highlighted in blue in the results list); double clicking it again boosted the number of sources in the transfers tab to a whopping 11 and the download speed by a few more kb/s. Since then it's been intermittently downloading or pending and the number of sources keeps dropping to 10. Double-clicking the search result boosts it back to 11 when this happens.
If the file genuinely has 82 sources Shareaza should be performing much better. If it doesn't, it shouldn't be misreported in the search results as having that many. Either way, there is a bug. Version is 2.5.1.0.