A new, small patch (15.7 MB) has been released for the PC version of Fallout: New Vegas. Here's the list of changes:

• Companions now show up as waypoints on the map
• Companions will always fast travel with you, unless told to wait or sent away
• Crafting menu should filter valid (bright) recipes to the top of the list
• Fix: DLC error/save corruption
• Fix: Stuttering with water effects
• Fix: Severe performance issues with DirectX.
• Fix: Controls temporarily disabled after reloading Cowboy Repeater while crouched
• Fixed crash using the Euclid C-Finder while having the Heave Ho perk
• Fix: Entering the strip after Debt Collector causes crash and autosave corruption
• Fix: Using Mojave Express dropbox can cause DLC warnings
• Fixed crash when buying duplicate caravan cards from a vendor in a single transaction
• Fix: Sitting down while looking down a weapon's ironsights leaves player control locked
• Fix: If a companion is knocked unconscious with broken limbs they stay broken on respawn
• Fix for varmint night scope effect persisting in kill cam.
• Fix for giving companions armor that adds STR does not increase their carry weight
• Fix: NPC Repair menu displays DAM as DPS
• Having NPC repair service rifle with forged receiver decreases CND.

A more comprehensive patch for all three platforms is still in the works.

Update: The Steam version has just been updated again, this time to 1.2.0.285 (13.8 MB). It corrects an issue with the first patch that made some enemies unkillable.