So just don't buy weapons in small areas?

Yeah a ton of stuff is messed up, not sure if anyone mentioned this already, but I've had a lot of problems with guns just not doing damage randomly, even with 1000 karma. It seems like it's only happened since the update, though. 
Another bug I noticed a while ago, but forgot to mention, is that at random times, when I buy a knife, I just don't get it. The "You have recieved your special equipment" thing pops up, I lose a credit, and the knife goes out of stock, but it's just not in my inventory.

I've got a couple suggestions for future updates:
1. Some kind of timestamps in the chat log, so that in some way they can match up with the time since death you find on a body, so if someone says I'm with XXX! 3 minutes ago, and their body is there 2 minutes and 57 seconds dead, then you know who to suspect.
2. Detectives able to buy normal weapons. Theres many a time when I join a server with a map I've never been on, immediately everyone scatters and grabs all the weapons, and then I get detective, and get killed within seconds.

Thanks!