halflife 2 problem

[slowkitten 0]

I have been playing half life 2. When i get to the OUR BENEFACTORS level I have a problem jumping. Every thing goes fine untill I try and jump the fence to get to the elevator. I have reset the keys, tried previouly saved games on the same level, and the jump works fine. any help would be greatly appereciated.

[tool_462 0]

That happened to me once on HL2 but it wasn't on the same part of the game. I remembered that Steam had updated that day, so I did a system restore to the night before and it worked again. Then after I installed the Steam update it worked just fine. Not sure if they have updated recently, I haven't played in a long time.