Aha, so it looks like our troubles are far from over:
Having said that, not a bad journey in this morning, as I was able to find a train leaving for Bois Colombes as soon as I got to St. Lazare. Got slightly lost negotiating the various bridges and tunnels to get here to the office though and the 20 minute walk actually took 30.
The good news is that the ice is now disappearing so I hope to be back on the bike this week. That should liven up this blog, if nothing else!