I must admit that I haven't really tested it up to now. While checking Sophos' behaviour with Firefox 5 I noticed that DLP seems to be "unaware" of browser uploads. Using a simple file rule "Block office documents to all destinations" I could upload a speadsheet with IE8 (32 and 64 bit), Firefox 5 and Firefox 3.6. Just to make sure I didn't make a simple mistake I tried putting it on a USB stick and this was blocked. Using the same policy with an XP SP3 client blocked the transfer as expected.
I'm not aware that it shouldn't work on 64 bit systems. Before calling support I just want to check if someone can verify that uploads are intercepted on Win7 64bit.
Christian
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