i m currently using windows7 ultimate and i m experiencing current problems:
1. picasa 3.0 just crashes at the start
2. gtalk wouldn't connect
3. adobe acrobat reader got deleted
4. google chrome crashes at the start
for problem3, all the dlls and the exe were missing when i try to run the application
these problems just happened 2 or 3 days ago. pls, give me suggestions of whether my system is being infected by a virus or something else had happened. thank u.