This only happened to me once, and it happened after I had alt+tabbed out to check on something, the next time I alt+tabbed it didn't happen again. Do you get it every time? because it only happened once to me.

Not every time, but very often and alt-tabbing hasn't worked. And i have only started getting it recently... never happened before

you can hit your chat key and move the courser to a corner of the screen, that's what I do whenever it happens

Alright thanks Ill have to try that out

This just started happening to me too.
I usually just restart my game

just click on people

Got this for the first time today. Had to restart.

Gotten this a few times not sure why, restarting my game fixes it.

Raptor it didnt work :( the only luck ive had so far is restarting :(

I get this every once in awhile, it's really distracting.

this happened to me in quake and basically forced me to stop playing for 3 months until it got fixed

wow same... i guess we have to wait for valve to fix it

i dunno what the pc equivalent is, but command tabbing into another program and back fixed it sometimes, and going in and out of chat fixed it sometimes

it is pretty obnoxious though

do u ppl still have your dx level settings in your launch options?

found and fixed.

basically SPUF has this too (http://forums.steampowered.com/forums/showthread.php?p=33465685), and I posted there too. Goped(stole) solution from Dark Souls from google here: http://forums.steampowered.com/forums/showthread.php?t=2900481
We focus on the section about hiding and NOT locking cursor.
Need to download: Nomousy + Autohotkey.
Instructions are in their threads. :)
You're welcome. It's a workaround at the mo, when (IF) valve fixes it we can remove the progs.

So basically, CTRL + J removes cursor, and again to show cursor :)

edit: change Dark Soul in the script to Team Fortress 2

OR use cl_software_cursor 1 in console <<not tested
:)

Alright ill have to try that out... thanks