Stuck in Gear when left over night.

Hi wonder if anyone could help me with the problem i am having with my vauxhall vectra 1.8 2002 model. When the car is left over night and i put it into reverse to move the car of the drive it won't come back out until the engine has been switched off even with the clutch down. After the initial problem the car then drives fine for the rest of the day until the following morning then i have the same problem.
The clutch was bleeded yesterday and the car was driving fine with all gears better than before it was bled. The reason it was bleed because i was having the above problems with reverese and other gears when cold sticking. Do i just need to re-bleed again or is this problem relating to something else.
Also when bleeding the fluid i noticed it was cloudy should i drain the fluid all out and then add new and blead until it comes out looking like it went in.

Thanks in advance