exception error raised in sslstart

[Momnewbie]

Hi,
I tried searching for previous posts regarding this error but couldn't find any. When I googled I found a page with some info - on Sidki's website -, but couldn't download the "fixes". Sorry if I've missed the answer if it was mentioned before. I'm using Proxo v4.5 with a mix of JD's and Sidki's filters.

This error mostly occurs when I'm accessing my mobile phone bills on the vodafone site, although it occasionally happens when I'm accessing my email at Yahoo as well.
I have just updated my proxo cert, so I don't think that can be the problem.
If anyone can help, I'd be grateful, or if someone can just point me to a previous solution, I'll sort it out from there.
Thanks for your time.
Momnewbie