"A man with 2 watches is never sure what time it is."
This extends to apps as well as one app may be more adept at adjusting to different connections and speeds.
--> There is one clue here. You scanned for a virus when I have yet to read there is a virus for OS X today. You may have some antivirus installed that is creating issues.
Bob
I'm on OS X 10.7, intel i5 macbook pro w/ 8gb DDR3 ram.
Browsing on Chrome, speakeasy clocks my speed at 1.3mb/sec for download and 0.3mb/sec for upload.
My activity monitor clocks me at 3KB/ sec download and 63KB/sec upload. Needless to say, browsing is super fast, uploading via dropbox or connecting with other programs is super slow.
Same story on multiple wireless networks. I used iAntivirus and the scan came up clean. Any ideas?

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