I replaced both hoses and the jubilee clips on my PAS reservoir a couple of months ago as it was leaking from the hoses and pooling fluid below. Interestingly enough it still seems to be leaking, albeit a lot slower.
I couldn't detect any leak from the hoses, or the top of the reservoir but it still pools underneath so wondering whether the reservoir has developed a hairline crack somehow. Not keen to replace it for £123 mind you!

Everything was cleaned, fitted correctly and genuine Honda power steering fluid, so a little baffled!
Found this video when I was investigating the problem, which shows worn O-rings letting air into the PAS system on some models. Not tested on mine yet but might be worth a look:
[youtube]Wf-_qp1y4yc[/youtube]