I have the same problem with the # key, but mine doesn't even offer the Line 1/2 option (which is more typical of a Series 40 handset), but others report that it's working just fine and dandy!
I'm not certain, but this anomaly appears to vary depending on the intended market for your handset, but apparently all the User Manuals indicate that the # key is a hot-key for the Silent Profile. Go figure.
All we can do is wait to see if a future FW update addresses the issue but, in the meantime, I just use the power switch to quickly change Profiles etc.
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