Version 1.46 (April 29th, 2010)

1. Improved database loading speed by approximately 15%.
2. Drastically improved performance of Website Blocking on Windows Vista and 7.
3. Fixed various scheduler compatibility issues on Windows 2000.
4. Fixed issue with quotations around paths passed to /logtofile and /logtofolder.
5. Fixed issue with detecting certain leftover traces of an infection.
6. Fixed issue with freeze when adding a shared printer on the network.

Product Details: Malwarebytes' Anti-Malware

Source: http://forums.malwarebytes.org/index.php?showtopic=3283&view=findpost&p=241494